Feline infectious peritonitis (FIP) is a fatal, incurable disease that affects cats.It is caused by Feline Infectious Peritonitis Virus (FIPV), which is a mutation of Feline Enteric Coronavirus (FECV) - (Feline coronavirus FCoV).Experts do not agree on the specifics of genetic changes that produce the FIPV.t is caused by Feline Infectious Peritonitis Virus (FIPV), which is a mutation of Feline Enteric Coronavirus (FECV) - (Feline coronavirus FCoV).
Some people get mild cases of only a few days, o â¦ thers get severe cases of a few weeks or more and are hospitalized. On average, the symptoms of the flu generally last 3 - 10 days but the H1N1/09 virus lasts more typically 4 - 7, although a cough and fatigue may persist for up to 2 weeks.
The QuickVue Influenza A+B Test is an accurate rapid flu test, that assists the doctor in making an accurate diagnosis. 1 How Long Do Flu Symptoms Last? According to the CDC, the flu typically lasts anywhere from a few days up to 2 weeks after it has been contracted. The length of the flu may be longer than 14 days for those in high risk categories for the illness. This may include: children under five, pregnant women, people over 50 years of age, and those living in assisted care or nursing homes.