Here is a list of minor illnesses that your puppy could contract. They are minor, but could become severe or deadly if not treated.
People often first encounter coccidia when they acquire a young puppy who is infected. The infectious organisms are canine/feline-specific and are not contagious to humans (compare to zoonotic diseases).
Young puppies are frequently infected with coccidia and often develop active Coccidiosis -- even puppies obtained from diligent professional breeders.
Coccidia are small protozoans (one-celled organisms) that live in the intestinal tracts of dogs and cats. They cause disease most commonly in puppies and kittens less than six months of age, in adult animals whose immune system is suppressed, or in animals who are stressed in other ways (e.g.; change in ownership, other disease present).
In dogs and cats, most coccidia are of the genus called Isospora. Isospora canis and I. ohioensis are the species most often encountered in dogs. Regardless of which species is present, we generally refer to the disease as coccidiosis. As a puppy ages, he tends to develop a natural immunity to the effects of coccidia. As an adult, he may carry coccidia in his intestines, and shed the cyst in the feces, but experience no ill effects.
How are coccidia transmitted?
A puppy is not born with the coccidia organisms in his intestine. However, once born, the puppy is frequently exposed to his mother's feces, and if the mother is shedding the infective cysts in her feces, then the young animals will likely ingest them and coccidia will develop within the young animal's intestines. Since young puppies, usually those less than six months of age, have no immunity to coccidia, the organisms reproduce in great numbers and parasitize the young animal's intestines. Oftentimes, this has severe effects.
From exposure to the coccidia in feces to the onset of the illness is about 13 days. Most puppies who are ill from coccidia are, therefore, two weeks of age and older. Although most infections are the result of spread from the mother, this is not always the case. Any infected puppy or kitten is contagious to other puppies or kittens. In breeding facilities, shelters, animal hospitals, etc., it is wise to isolate those infected from those that are not.
What are the symptoms of
coccidiosis?
The primary sign of an animal suffering with coccidiosis is diarrhea. The diarrhea may be mild to severe depending on the level of infection. Blood and mucous may be present, especially in advanced cases. Severely affected animals may also vomit, lose their appetite, become dehydrated, and in some instances, die from the disease.
Most infected puppies encountered by the authors are in the four to twelve week age group. The possibility of coccidiosis should always be considered when a loose stool or diarrhea is encountered in this age group. A microscopic fecal exam by a veterinarian will detect the cysts confirming a diagnosis.
It should be mentioned that stress plays a role in the development of coccidiosis. It is not uncommon for a seemingly healthy puppy to arrive at his new home and develop diarrhea several days later leading to a diagnosis of coccidia. If the puppy has been at the new home for less than thirteen days, then he had coccidia before he arrived. Remember, the incubation period (from exposure to illness) is about thirteen days. If the puppy has been with his new owner several weeks, then the exposure to coccidia most likely occurred after the animal arrived at the new home.
What are the risks?
Although many cases are mild, it is not uncommon to see severe, bloody diarrhea result in dehydration and even death. This is most common in animals who are ill or infected with other parasites, bacteria, or viruses. Coccidiosis is very contagious, especially among young puppies. Entire kennels may become contaminated, with puppies of many age groups simultaneously affected.
What is the treatment of coccidiosis?
Fortunately, coccidiosis is treatable. Drugs such as sulfadimethoxine (Albon®) and trimethoprim-sulfadiazine (Tribrissen®) have been effective in the treatment and prevention of coccidia. Because these drugs do not kill the organisms, but rather inhibit their reproduction capabilities, elimination of coccidia from the intestine is not rapid. By stopping the ability of the protozoa to reproduce, time is allowed for the puppy's own immunity to develop and remove the organisms. Drug treatments of one to three weeks are usually required.
How is coccidiosis prevented or
controlled?
Because coccidia is spread by the feces of carrier animals, it is very important to practice strict sanitation. All fecal material should be removed. Housing needs to be such that food and water cannot become contaminated with feces. Clean water should be provided at all times. Most disinfectants do not work well against coccidia; incineration of the feces, and steam cleaning, immersion in boiling water, or a 10% ammonia solution are the best methods to kill coccidia. Coccidia can withstand freezing.
Cockroaches and flies can mechanically carry coccidia from one place to another. Mice and other animals can ingest the coccidia and when killed and eaten by a dog, for instance, can infect the dog. Therefore, insect and rodent control is very important in preventing coccidiosis.
The coccidia species of dogs and cats do not infect humans.
WHAT IS IT?
“Kennel cough” is an infectious bronchitis characterized by a harsh, hacking cough which most people describe as sounding like “something stuck in my dog’s throat.” It is analogous to a chest cold for humans and is only a serious condition in special circumstances (see below); in general, it resolves on its own. A dog with Kennel Cough generally feels active and maintains a normal appetite despite frequent fits of coughing. There is usually no fever or listlessness, just lots of coughing.
NOT SURE WHAT A COUGHING DOG SOUNDS LIKE?
Dogs can make an assortment of respiratory sounds. Usually a cough is very recognizable but it is important to be aware of another sound called a “reverse sneeze.” The reverse sneeze is often mistaken for a cough, for a choking fit, for sneezing, for retching, or even for gasping for breath. In fact, the reverse sneeze represents a post-nasal drip or “tickle in the throat.” It is considered normal especially for small dogs or dogs and only requires attention if it is felt to be “excessive.” The point here is to know a cough when you see one. A cough can be dry or “productive,” meaning it is followed by a gag, swallowing motion, production of foamy mucus (not to be confused with vomiting). Here are some videos that might help:
REVERSE SNEEZING DOG:
A coughing dog that has a poor appetite, fever, and/or listlessness should be evaluated for pneumonia.
HOW INFECTION OCCURS?
The infected dog sheds infectious bacteria and/or viruses in respiratory secretions. These secretions become aerosolized and float in the air to be inhaled by a healthy dog.
The normal respiratory tract has substantial safeguards against invading infectious agents. The most important of these is probably what is called the “mucociliary escalator.” This safeguard consists of tiny hair-like structures called “cilia”, which protrude from the cells lining the respiratory tract, and extend into a coat of mucus over them. The cilia beat in a coordinated fashion through the lower and more watery mucus layer called the “sol.” A thicker mucus layer called the “gel” floats on top of the sol. Debris, including infectious agents, get trapped in the sticky gel and the cilia move them upward towards the throat where the collection of debris and mucus may be coughed up and/or swallowed.
The mucociliary escalator is damaged by the following:
Without this protective mechanism, invading bacteria, especially Bordetella bronchiseptica, the chief agent of Kennel Cough, may simply march down the airways unimpeded.
Bordetella bronchiseptica organisms have some tricks of their own as well:
Because it is common for Bordetella to be accompanied by at least one other infectious agent (such as one of the viruses listed below), “Kennel Cough” is actually a complex of infections, rather than infection by one agent.
Classically, dogs get infected when they are kept in a crowded situation with poor air circulation but lots of warm air (i.e. a boarding kennel, vaccination clinic, obedience class, local park, animal shelter, animal hospital waiting room, or grooming parlor). In reality, most causes of coughing that begin acutely in the dog are due to infectious causes and usually represent some form of Kennel Cough.
THE INCUBATION PERIOD IS 2 - 14 DAYS
HOW IS DIAGNOSIS MADE?
Usually the history of exposure to a crowd of dogs within the proper time frame plus typical examination findings (coughing dog that otherwise feels well) is adequate to make the diagnosis. Radiographs show bronchitis, though severe cases can progress to pneumonia, especially if the canine distemper virus is involved.
HOW CONTAGIOUS IS IT?
Bordetella infection can be picked up by rabbits, guinea pigs, pigs, cats (if they are very young and housed in groups), and other dogs. Bordetella is generally not considered contagious to humans though it is closely related to Bordetella pertussis, the agent of Whooping Cough. Immune-suppressed humans potentially could be infected.
Among dogs Kennel Cough is fairly contagious depending on stress level, vaccination status, and exposure to minor viruses. Dogs shed Bordetella organisms for up to 3 months after infection.
Our hospital recommends keeping all dogs current on their Bordetella vaccinations
as you never know when they will be in an unexpected situation.
HOW IS KENNEL COUGH TREATED?
Although most cases will go away on their own, we like to think we can hasten recovery with antibiotics to directly kill the Bordetella organism. Alternatively, Kennel Cough may be treated with cough suppressants to provide comfort during natural recovery. Alternatively, antibiotics and cough suppressants can be combined.
WHEN IS IT A SERIOUS CONDITION?
Very young puppies, especially those with a recent shipping history (i.e. pet store puppies) are especially prone to severe cases of infectious tracheobronchitis (frequently progressing to pneumonia).
In dogs where the distemper virus is involved (usually shelter or pet store puppies), there is tremendous potential for serious consequences.
VACCINATION OPTIONS:
There are basically two options for Kennel cough vaccination: injectable and intranasal. It is important to realize that not all members of the Kennel Cough complex have a vaccine. Also, because Kennel Cough is a localized infection (meaning it is local to the respiratory tract), it is an infection that does not lend itself to prevention by vaccination. Vaccination must be regularly boosted and often vaccination simply muffles the severity of infection without completely preventing it.
INJECTABLE VACCINE
Injectable vaccination is a good choice for aggressive dogs, who may bite if their muzzle is approached. For puppies, injectable vaccination provides good systemic immunity as long as two doses are given (approximately one month apart) after age 4 months. Boosters are generally given annually.
There is some controversy over whether previously vaccinated dogs generate
better immunity receiving injectable or nasal boosters for Kennel Cough.
Parainfluenza, Adenovirus type 2, and canine distemper, all members of the Kennel Cough complex, are all covered by the standard DHLPP vaccine, the basic vaccine for dogs. Adenovirus Type 2 serum also immunizes against Adenovirus Type 1, the agent of infectious canine hepatitis.
NASAL VACCINE
Intranasal vaccination may be given as early as 3 weeks of age and immunity generally lasts 10-12 months. (Usually this vaccine is also boosted annually.) The advantage here is that the local immunity is stimulated, right at the site where the natural infection would be trying to take hold.
It takes 4 days to generate a solid immune response after intranasal vaccination so it is best if vaccination is given at least 4 days prior to the exposure. Some dogs will have some sneezing or nasal discharge in the week following intranasal vaccination. As a general rule, nasal vaccination provides faster immunity than injectable vaccination.
There is some evidence that young puppies in a high risk environment may benefit from
both injectable and nasal vaccination (rather than simply receiving one or the other).
IF A NASAL VACCINE IS ACCIDENTALLY GIVEN AS AN INJECTION, AN ABSCESS CAN RESULT UNDER THE SKIN! Nasal vaccines cannot be given as injections.
VACCINATION IS NOT USEFUL IN A DOG
ALREADY INCUBATING KENNEL COUGH.
WHAT IF KENNEL COUGH DOESN’T IMPROVE?
As previously noted, this infection is generally self-limiting. It should be at least improved partially after one week of treatment. If no improvement has been observed in this time, a re-check exam (possibly including radiographs of the chest) would be a good idea. Failure of Kennel Cough to resolve suggests an underlying condition. Kennel Cough can activate a previously asymptomatic collapsing trachea or the condition may have progressed to pneumonia. There is also another respiratory infection called Canine Influenza, which seemed to be a racing greyhound issue exclusively until late 2005. This infection produces fever and pneumonia but starts looking like a routine Kennel Cough. This particular infection is much more severe, highly contagious, but for now seems to be uncommon.