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.