Tick Fever in Dogs in India: Ehrlichia, Babesia, Hepatozoon and Anaplasma Explained

Signs of Tick fever (canine tick-borne disease)

The 10 signs to watch for are listed below. Any one of them is a reason to consult your nearby vet; none of them is a diagnosis.

• Fever that comes and goes, often the first thing an owner notices
• Lethargy, and a dog that stops asking for its walk
• Loss of appetite, from picking at food to refusing it
• Pale gums, the anaemia every Indian series records
• Nosebleed, or pinpoint red spots on the gums or belly
• Dark red or coffee-coloured urine, most often in babesiosis
• Swollen hind legs, or a distended abdomen
• Enlarged spleen or lymph nodes, found by your vet on examination
• Cloudy eye or sudden eye pain, recorded in Indian ehrlichiosis cases
• Weight loss and weakness building over weeks, in the chronic phase

Breeds on this site that document this condition

Tick fever is not a breed disease. Exposure is about where a dog lives, how much time it spends where ticks are, and whether its acaricide cover has a gap month, and every Indian study that looked for a breed effect found tick infestation and tick control mattering far more than breed. The six breed pages below are the ones on this site that already carry a cited tick-borne figure with its denominator, one per Indian study, so you can see how the same disease reads in six different states. They are a map of the Indian evidence, not a ranking of risk.

What tick fever in dogs means in India

Tick fever in dogs is not one disease. In India the phrase covers four separate infections carried by the same tick, and a single dog is often carrying more than one of them at once Kopparthi J, Chennuru S, Rayulu Vukka C. Which pathogen a dog has decides the drug class, the length of treatment and whether the infection can return, so the useful question is never whether a dog has tick fever but which infection it has.

The four are Ehrlichia canis, which infects white blood cells, Babesia species, which destroy red blood cells, Hepatozoon canis, which a dog catches by swallowing a tick rather than by being bitten, and Anaplasma platys, which attacks platelets MSD Veterinary Manual. They are grouped under one lay name because they share one vector and because their early signs look alike. They are not one condition, and an Indian owner who treats them as one will usually be treating the wrong one.

The page an Indian owner meets first is often about another continent. The MSD Veterinary Manual page that carries the exact words Tick Fever in its title describes Rocky Mountain spotted fever, a Rickettsia rickettsii infection its own text places in "certain parts of North, Central, and South America", and its 494 words never name Ehrlichia, Babesia, Hepatozoon or Anaplasma. That disease is real. It is not what an Indian veterinarian means when she says tick fever, and no Indian survey has reported it in a dog.

The Indian pages ranking beside it use the right name and stop short of the content. pharmeasy.in runs 2,818 words on tick fever without naming one pathogen genus, only the tick. vosd.in names Babesia, Ehrlichia and Anaplasma once each and Hepatozoon not at all. Across all six pages read on 23 September 2026 the words prevalence, survey and study appear zero times, and no Indian study is cited on any of them Supertails, Tick Fever in Dogs: Symptoms Vetic (vetic.in). One page is the exception, an Indian clinic chain rather than a retailer: petyaari.com, a Hyderabad practice, names all four pathogens correctly, then answers the cure question with the words "tick fever is 100% curable";. This page exists to put the denominators back.

What is tick fever, in one paragraph

Tick fever is the Indian shorthand for canine tick-borne disease, an infection picked up from an attached or swallowed tick that settles in the blood and shows up as fever, lethargy, loss of appetite, pale gums and a falling platelet count. Every one of the four pathogens can produce that picture, which is why the symptoms of tick fever cannot tell a vet which infection she is treating. In the four-city Indian survey that used both methods, 261 of 525 dogs were positive by molecular testing while a stained blood smear found evidence in only 12 of the same 525.

The condition runs in phases. An acute phase of one to four weeks after the tick bite is when most dogs are presented; a subclinical phase can follow in which a dog looks entirely well while the organism persists; and a chronic phase can appear months later with bleeding, weight loss and bone-marrow failure. Anaplasma platys in particular is usually silent, and its platelet count rises and falls on a one to two week cycle when nothing is done.

The four pathogens behind one name, and where each one is covered

Four pathogens account for almost all Indian tick fever, and the Indian figures for each are very different. Across 525 dogs in Delhi, Mumbai, Sikkim and Ladakh, Hepatozoon canis was commonest at 30 percent, followed by Ehrlichia canis at 20.6 percent, Anaplasma platys at 6.5 percent and Babesia vogeli at 5.5 percent, with Babesia gibsoni at 0.2 percent.

Those proportions invert in clinic caseloads. Among 584 client-owned dogs tested at an animal health centre in Kolkata between July 2024 and December 2025, Babesia gibsoni led at 447 of 584 and Anaplasma species at 325 of 583. The difference is the population, not the country: the four-city figures come from apparently healthy street and shelter dogs, while the Kolkata, Kerala, Odisha and Andhra Pradesh figures come from dogs a vet was already worried about Shil S, Chini DS, Mukherjee Venugopal V, Deepa PM, Muhasin Asaf VN. Both are real, and reading a clinic figure as a national one is the commonest way these numbers get misused.

Ehrlichia canis, the one most Indian vets mean first

Ehrlichia canis is the pathogen behind the classic tick fever picture of fever, lethargy, nosebleed and a collapsed platelet count, and it is the one Indian series most often confirm. In Bhubaneswar, 56 of 178 pet dogs were confirmed positive, epistaxis appeared in 46.4 percent of them, hind limb oedema in 16.07 percent, and 79 percent had a history of tick infestation. It is also the one that turns severe most reliably, and it has its own page: read ehrlichiosis in dogs for the staging, the diagnosis and the treatment in detail.

Babesia, the one that turns the urine dark

Babesia destroys red blood cells, so its signature is anaemia, pale gums, jaundice and dark red urine rather than bleeding. It dominates Indian clinic caseloads: Babesia species were found in 80 of 120 clinically affected dogs in Kerala, 66.7 percent, and in 447 of 584 dogs in West Bengal Shil S, Chini DS, Mukherjee. Babesia gibsoni and Babesia vogeli behave differently and are treated differently, and both are covered on babesiosis in dogs.

Hepatozoon canis, the one a dog eats

Hepatozoon canis is the exception to everything an owner has been told about tick bites, because a dog acquires it by swallowing an infected tick rather than by being bitten by one. A dog chewing ticks off its own legs is therefore not protecting itself. It was the commonest pathogen in the four-city survey at 30 percent of 525 dogs, and a Haryana study that screened 120 dogs by PCR confirmed 24 with Hepatozoon canis and nothing else, in which pyrexia appeared in 83.33 percent and inappetence to anorexia in 75.00 percent Bhagwan J, Singh Y, Jhambh R, Kumar P. It has its own page at hepatozoonosis in dogs.

Anaplasma platys, the quiet one this page keeps

Anaplasma platys stays on this page because it is the pathogen Indian owners are least often told about and the one most likely to be found by accident. It infects platelets and causes canine cyclic thrombocytopenia, it is transmitted by the brown dog tick, and infection is usually subclinical, with platelet counts waxing and waning on a one to two week cycle in the absence of treatment. When signs do appear they are fever, enlarged lymph nodes, an enlarged spleen and bleeding tendencies such as pinpoint haemorrhages.

The Indian numbers for it span two orders of magnitude, and that spread is the finding. In 525 apparently healthy street and shelter dogs it reached 6.5 percent, with a 95 percent confidence interval of 4.5 to 8.9, running 13 percent in Delhi, 8 percent in Mumbai and zero in both Sikkim and Ladakh. Among 584 dogs at a Kolkata clinic it reached 325 of 583, 55.75 percent. In coastal Odisha it was the commonest of the five pathogens tested, at 52 of 320 dogs, with significantly higher odds in the rainy season. In Kerala it appeared in only 2 of 120 clinically affected dogs. The systematic review of canine anaplasmoses across south and Southeast Asia, covering 71 studies published between 2000 and 2024, reports the same spread from outside India, with infection rates for the two Anaplasma species running from 1.3 percent to 70.5 percent and A. platys recorded in 13 countries.

Two details from that review matter to an Indian reader. Anaplasma phagocytophilum, the species that causes granulocytic anaplasmosis, has been reported in only two countries in the whole region, India and Malaysia. And the review counts 49 human cases of granulocytic anaplasmosis in India, while noting that the extent of human infection in the region is largely unknown. Anaplasmosis is a zoonotic disease and both species have been reported in people, but a dog cannot give it to you directly, because a tick vector is required. For scale outside India, a survey of 75 Pshdar shepherd dogs in Iraq with no clinical signs found Anaplasma platys in 2 of them, 2.7 percent.

The brown dog tick, and how dogs get tick fever in an Indian home

How dogs get tick fever in India is unusually simple, because one tick species carries almost all of it. Rhipicephalus sanguineus, the brown dog tick, was 100 percent of the 417 ticks collected in Mumbai and 100 percent of the 379 collected in Delhi in the four-city survey, and every one of the 908 ticks recovered in the Andhra Pradesh study was Rhipicephalus sanguineus Kopparthi J, Chennuru S, Rayulu Vukka C.

That single fact explains most of what follows. TroCCAP, the tropical companion-animal parasite council, records brown dog ticks as the most common ticks infesting dogs in the tropics, and lists Babesia vogeli, Ehrlichia canis and Rickettsia rickettsii as pathogens transmitted while the tick feeds, with Hepatozoon acquired when the animal ingests an infected tick. One tick, four diseases, and a dog that is bitten by one tick has usually been bitten by many.

Why an Indian flat keeps a tick population going all year

An Indian flat sustains this tick because the species is endophilic, which means adapted to indoor living, and completes its entire life cycle inside a building. The engorged female drops off the dog, hides, and lays an average of 1500 to 4000 eggs in hidden places such as cracks and crevices in the walls; the eggs hatch after an incubation of six days to some weeks; and in favourable conditions the species completes three or four generations a year. In tropical and subtropical areas it is prevalent throughout the year, which is why tick cover in India is a year-round routine and not a seasonal one.

The line that changes how an owner searches a room is this one. Most of the ticks are not on the dog but in the environment, and adults can be found on outside walls, on the ground between rocks, and inside cracks and crevices. Tiled floors with open grout lines, hairline cracks at the skirting, the gap behind a wall-mounted cupboard and the underside of a charpoy are all the same habitat as a limestone wall. Five places are worth a torch in an Indian home.

• Wall cracks and skirting joints in the room where the dog sleeps, which is where females lay.
• Grout lines and lifted floor tiles, the indoor equivalent of the crevices the species uses outdoors.
• Seams of the dog's bedding and the sofa, hot-washed weekly rather than shaken out.
• Behind and under fixed furniture, where ticks crawl off the dog after feeding.
• The balcony grille and the stairwell wall, since the tick survives outdoors wherever refuges exist.

Season shifts the mix rather than switching it off. In coastal Odisha, Babesia gibsoni and Hepatozoon canis peaked in the summer months while the odds of Anaplasma platys infection were significantly higher in the rainy season, and Ehrlichia canis and Babesia vogeli showed no seasonal effect at all. In Kerala, cases peaked before the monsoon, in March to May. Read this next to our guide to monsoon care for dogs in India, because the wet months change the parasite mix rather than ending it.

Signs that mean an appointment this week, and the ones that mean today

See your vet within the week if a dog that has had ticks develops fever, goes quiet, stops eating or has pale gums, and go the same day for a nosebleed, dark red urine, collapse or laboured breathing. Those are the presenting signs recorded in the Indian series, not a general list Venugopal V, Deepa PM, Muhasin Asaf VN.

What the symptoms of tick fever look like in Indian dogs has been written down precisely. In Bhubaneswar, the 56 confirmed ehrlichiosis dogs showed epistaxis in 46.4 percent, ascites in 26.78 percent and hind limb oedema in 16.07 percent, alongside non-typical signs including corneal opacity. In Kerala, the 120 clinically affected dogs showed fever, pallor, splenomegaly, lymphadenopathy and dehydration, with anaemia, thrombocytopenia and raised liver enzymes on bloodwork. In Haryana, the 24 Hepatozoon-positive dogs showed pyrexia in 83.33 percent, inappetence to anorexia in 75.00 percent and pale to congested mucous membranes in 58.33 percent. The overlap between those three lists is the reason this page keeps saying you cannot diagnose by eye. Four signs move a dog from this week to today.

• A nosebleed, or pinpoint red spots on the gums or belly, the bleeding tendency that marks a collapsed platelet count.
• Dark red or coffee-coloured urine, which points at red cell destruction rather than infection of white cells.
• Collapse, staggering or gums that have gone white, the end of the anaemia the Kerala series recorded.
• A swollen belly or swollen hind legs, recorded as ascites in 26.78 percent and hind limb oedema in 16.07 percent of the Bhubaneswar cases.

Timing is the other thing owners get wrong. A tick found today may have been feeding for a week, and signs appear days to weeks after the bite rather than the next morning, so the right move on finding a tick is to remove it, write the date on the calendar and watch the dog for three weeks. A dog with no ticks visible today is not a dog that has not been bitten: in the Bhubaneswar series 79 percent of infected dogs had a tick history at some point in their lives, which is a history, not a finding on the day.

Diagnosis of tick fever, and why one blood smear misses most of it

Diagnosis of tick fever runs in two steps, a blood count that says how sick the dog is and a pathogen test that says which infection it has, and the second step is where Indian dogs get missed. A stained blood smear found evidence in 12 of 525 dogs in the four-city survey while molecular testing on the same samples found 261.

That is not one odd result. In Bhubaneswar, of the 56 dogs finally confirmed positive for Ehrlichia canis, a blood smear found 7, a buffy coat smear found 18, and PCR found 52. In Andhra Pradesh, 47 of 442 samples called negative by Giemsa staining turned out to carry at least one co-infection on multiplex PCR. In Punjab, microscopy on 719 samples found Babesia gibsoni in 5.0 percent and Hepatozoon canis in 1.0 percent, where multiplex PCR on the same samples found 8.9 percent and 5.1 percent. In West Bengal, microscopy missed 130 of 158 Babesia canis positives and 146 of 169 Hepatozoon positives. A negative smear is weak evidence of absence, and every one of those studies says so in its own words.

What a 4Dx-style snap test answers, and what it does not

A 4Dx-style in-clinic test answers a narrower question than most owners assume. The IDEXX SNAP 4Dx Plus panel screens for seven vector-borne pathogens, namely heartworm antigen and antibodies to Ehrlichia canis, Ehrlichia ewingii, Ehrlichia chaffeensis, Borrelia burgdorferi, Anaplasma phagocytophilum and Anaplasma platys. Read that list against the Indian data and two gaps open. Babesia and Hepatozoon are not on it at all, and those two are the commonest pathogens in Indian clinic caseloads and in the four-city survey respectively Abd Rani PAM, Irwin PJ, Gatne M. One of the four slots is spent on Lyme disease, and a scoped PubMed search on 23 September 2026 for Borrelia or Lyme together with dog and India returned three records, from Hong Kong, Israel and Israel, and no Indian canine series at all. The control search run in the same session returned 126 records, so the instrument was live.

The second limit is what an antibody result means. IDEXX describes detection of antibodies to Ehrlichia as indicating tick exposure and the transmission of infectious agents, and recommends additional testing in those patients. That is exposure, not a current infection, and in a country where roughly half of sampled street dogs have met one of these organisms it is a weaker discriminator than it is in a temperate country. A snap test is a useful first filter in India, not an answer.

An Indian molecular panel covers the gap. VetGene, a Chennai veterinary diagnostic laboratory serving clinics in several cities, lists a canine tick-borne pathogen panel covering Babesia canis, Babesia vogeli, Babesia rossi, Babesia gibsoni, Ehrlichia canis, Anaplasma platys, Hepatozoon canis, Mycoplasma haemocanis, Dirofilaria immitis, Leptospira, Trypanosoma evansi and severe fever with thrombocytopenia syndrome virus, with a stated turnaround of six hours for Chennai samples and 24 hours elsewhere. That composition, not the brand, is the thing to ask your own vet about, because it is the list that actually matches what Indian studies keep finding.

On price, this page prints nothing, because nothing could be sourced. No Indian veterinary laboratory rate card for a canine tick-borne PCR panel was reachable on 23 September 2026, including VetGene's own site, which publishes its panel composition and its turnaround times but no fee. Rather than repeat an unsourced figure, ask your clinic for the panel price in writing before the sample is drawn, and ask which pathogens the quoted panel covers.

Co-infection is the Indian default, not the exception

An Indian dog that tests positive for one tick-borne pathogen is more likely than not carrying a second. In the four-city survey, concurrent infection with more than one pathogen occurred in 39 percent of infected dogs, and among 584 dogs tested at a Kolkata clinic 72.9 percent were carrying two or more pathogens and 34.9 percent three or more Shil S, Chini DS, Mukherjee.

Co-infection is also the thing a single test is least able to see. In Andhra Pradesh, microscopy found co-infection in 9 of 442 dogs, 2.00 percent, while multiplex PCR on the same samples found 12.67 percent, with the Babesia plus Ehrlichia combination commonest at 9.28 percent, and 47 samples that Giemsa staining called negative carried at least one co-infection. In Kerala, co-infection of Babesia gibsoni with Babesia vogeli accounted for 76.3 percent of all Babesia-positive cases. The West Bengal work goes further and shows the pathogens interacting: Babesia gibsoni parasitaemia was significantly higher in dogs co-infected with Ehrlichia canis, which the authors read as immunosuppressive synergy.

Why this matters to an owner is practical rather than academic. The drug that clears a rickettsial organism does nothing to a protozoan one, so a dog treated for only the pathogen it was diagnosed with can improve, relapse and be labelled a treatment failure when it was a testing failure. The 2011 authors said exactly this, that Indian practitioners should be aware that finding one such pathogen raises the potential for multiple infections. Four things follow from that, in order.

1. Ask for a panel rather than a single test when signs and a tick history point at tick fever, since a panel is what finds the second pathogen.
2. Take a negative smear as weak evidence, because a smear found 12 of the 261 infections that molecular testing found in the same 525 dogs.
3. Re-test rather than re-treat if a dog improves and then slides back, because relapse and a missed co-infection look identical from the sofa.
4. Treat the other dogs in the house as exposed, since they share the tick population that lives in the building rather than on any one animal.

One honest limit on all of these numbers. Every Indian figure above except the four-city survey comes from dogs a veterinarian was already testing, which is a clinic caseload and not a random sample of Indian dogs. Say it the way the studies say it: among dogs tested at Indian veterinary clinics, 76.54 percent of 584 carried Babesia gibsoni. Read as a national prevalence, that figure is badly misleading. Read as what walks into a busy Indian clinic with a fever, it is exactly the warning an owner needs.

The Indian map also has holes worth naming. The series on this page sampled Delhi, Mumbai, Sikkim and Ladakh, Kolkata, Bhubaneswar, eight coastal districts of Odisha, Andhra Pradesh, Punjab, Haryana and Kerala Shil S, Chini DS, Mukherjee Chakraborty A, Rath PK, Panda SK Pati M, Patra RC, Dehuri M, Mishra SR Kopparthi J, Chennuru S, Rayulu Vukka C Singh H, Padmaja M, Thomas AM, Panwar H Bhagwan J, Singh Y, Jhambh R, Kumar P Venugopal V, Deepa PM, Muhasin Asaf VN. No published canine prevalence series we could open covers Bengaluru, Hyderabad, Pune or Ahmedabad, so this page prints no figure for those cities rather than borrowing one from the state next door. The vector and the weather do carry across, since the brown dog tick is prevalent throughout the year in tropical and subtropical areas and breeds indoors, which describes a hot and humid Indian metro wherever it sits. The oldest Indian numbers here come from Chennai, in Tamil Nadu, where the 2011 authors' review of earlier Indian work records Babesia gibsoni in 0.1 percent of 5,832 client-owned dogs by blood smear alone, and a nested PCR study finding Ehrlichia species in 46 of 98 owned dogs against 19 percent by microscopy.

Tick fever treatment in general terms, and the recovery timeline

Tick fever treatment depends entirely on which pathogen is found, which is why this page keeps insisting on the test first. A tetracycline-class antibiotic is the standard answer for the rickettsial infections, Ehrlichia and Anaplasma, while the Babesia species need antiprotozoal drugs that do nothing to bacteria, and Hepatozoon canis needs a different approach again Vetic (vetic.in).

This page prints no dose and no prescription, and that is deliberate rather than cautious. The drug, the dose and the length of the course are set by the veterinarian who has the dog, its weight, its bloodwork and its other illnesses in front of her. What an owner can usefully hold is the shape of it. Supportive care, meaning fluids, nursing and sometimes a transfusion, is what carries a severe case through the first days, and the Bhubaneswar series recorded kidney changes on ultrasound in 25 percent of its positive cases, which is the kind of finding that changes supportive care.

Whether a dog clears the organism depends on which organism it is. For the rickettsial infections, early treatment in the acute phase generally works well, and Indian veterinary chains describe Ehrlichia as treatable with a full antibiotic course. Babesia gibsoni is harder, and vetic.in tells Indian owners plainly that a dog once infected with Babesia remains a carrier and may show clinical signs at any point in its life. Tick fever is not usually fatal when it is caught early, and it is not never fatal either, since three of the 56 confirmed ehrlichiosis dogs in Bhubaneswar died despite treatment, a case fatality rate of 5.35 percent. The Hyderabad clinic page ranking for this query calls tick fever "100% curable" and promises 100 percent recovery, and supertails.com puts recovery above 90 percent with no source and no denominator, neither of which those Indian figures support Supertails, Tick Fever in Dogs: Symptoms Chakraborty A, Rath PK, Panda SK.

The recovery timeline, and what to watch during it

The recovery timeline runs in weeks rather than days, and the platelet count is what your vet will monitor. Most dogs recover their appetite and their energy within days of starting treatment in the acute phase, but the blood picture lags behind the dog, because anaemia and thrombocytopenia were the defining findings in both the Kerala and Bhubaneswar series, and a platelet count takes time to climb back. With Anaplasma platys specifically, an untreated platelet count rises and falls on a one to two week cycle, so a single improved reading is not by itself proof of anything. Five things structure a normal recovery.

1. Finish the full course, even after the dog looks well, because the chronic phase begins in dogs that were treated too briefly.
2. Repeat the blood count on the schedule your vet sets, since the platelet count is the measurable part of recovery.
3. Keep the dog quiet while it is anaemic, because an anaemic dog tires on a walk that used to be easy.
4. Restart tick cover the same week, since nothing about having been infected prevents the next bite.
5. Report any nosebleed or new bruising at once, which is the bleeding tendency returning.

Food is the question owners ask most and the one with the least published guidance. No Indian study and no guideline we opened prescribes a diet for tick fever. What the studies do record is that these dogs stop eating: inappetence to anorexia appeared in 75.00 percent of the Haryana Hepatozoon cases, and anorexia was one of the three screening criteria in the Kerala series. Getting calories in matters; the particular food is your vet's call, especially where the bloodwork shows liver or kidney involvement.

Prevention of tick fever, and the one number that makes the case

Prevention of tick fever is tick control, and the four-city survey put a number on how much it is worth. Dogs infested with ticks were 3.3 times more likely to be positive for at least one tick-borne pathogen than dogs without ticks, with a 95 percent confidence interval of 2.2 to 4.8. No vaccine exists for any of the four.

The Andhra Pradesh study found the same thing from the other side: presence of ticks was a risk factor for overall tick-borne infection, and the incidence of infection was lower in dogs that had had a previous acaricidal treatment. TroCCAP's own rule for the tropics is that dogs and cats should be protected from ectoparasite infestations throughout the year, and that regular visual inspection and prompt removal of ticks is highly recommended to reduce the risk of pathogen transmission. That is the whole prevention case in two sentences, and it is year-round because the tick is.

The full routine, the product classes sold in India with their prices, the guideline removal method and what the evidence says about Dettol and vinegar all live on one page, and this page will not repeat them. Read dog ticks in India: prevention, removal and products for the routine itself. Four steps are worth stating here because they are the ones that lower infection risk rather than tick count.

1. Keep an acaricide on its label interval with no gap month, because a missed month is a generation of ticks.
2. Check the dog by hand daily and take off every tick you find, which TroCCAP recommends specifically to cut pathogen transmission.
3. Treat the building, not only the dog, since most of the ticks are in the environment rather than on the animal.
4. Stop the dog eating ticks it pulls off itself, the only route by which Hepatozoon canis is acquired.

Screening without signs is a judgement call and this page will not make it for you. There is no breed scheme, no registry and no national programme for tick-borne infection in dogs, and nothing to screen against. What the Indian data supports is testing a dog with signs and a tick history properly rather than testing every healthy dog annually, and the Odisha risk analysis backs that up by finding tick infestation the single strongest predictor of infection while breed, sex and age mostly were not. A dog such as the Nova Scotia Duck Tolling Retriever, with a documented immune-mediated disease burden, is the kind of case where your vet may reasonably want a lower threshold for testing.

Living with a dog that has had tick fever

A dog that has had tick fever needs three things afterwards: a finished course, a repeat blood count, and tick cover that never lapses again. Reinfection is the ordinary outcome in India, because the tick population lives in the building and recovering from one infection confers nothing against the next bite Tropical Council for Companion Animal….

The second thing to expect is that a dog can look entirely well and still be carrying an organism. The subclinical phase is real for the rickettsial infections, and infection with either Anaplasma species is usually subclinical in the first place. That is why a vet may want a follow-up count weeks after the dog stopped looking ill, and why a dog with a history of tick fever that goes quiet again earns an appointment rather than a wait-and-see.

Is tick fever contagious to other dogs, or to people

Tick fever is not contagious between dogs by contact, and a dog cannot pass it to a person directly. Every one of the four pathogens needs a tick to move from one animal to the next, and anaplasmosis is a zoonotic disease in which direct transmission does not occur, because the presence of a tick vector is required. What is genuinely shared in an Indian household is the tick, not the disease. If one dog in a flat has tick fever, the other animals are living in the same infested rooms, which is why the routine covers every animal and the building.

Human risk in India is not zero, but it runs through the tick rather than the dog. The systematic review of canine anaplasmoses in south and Southeast Asia counts 49 human cases of granulocytic anaplasmosis in India and says plainly that the extent of human infection in the region is largely unknown. The MSD Manual makes the same point about Rocky Mountain spotted fever, that people are infected through exposure to fluids from crushed ticks rather than from the dog. Handle ticks with a tool, never crushed between the fingers.

The last thing worth saying is about the ordinary Indian dog. Half the street and shelter dogs in the four-city survey were carrying one of these organisms while looking well, and dogs from refuges were 2.3 times less likely to be positive than street dogs, which is what routine care and treatment does to the odds. A newly adopted Indian Pariah Dog comes from that population, so treat it before it comes through the door, tell your vet where it came from, and expect the first blood count to be worth doing.