Swine influenza, or flu, is a contagious respiratory disease that affects pigs. It is caused by a type-A influenza virus. Outbreaks in pigs occur year-round. The current strain is a new variation of an H1N1 virus, which is a mix of human and animal versions.
When the flu spreads person-to-person, instead of from animals to humans, it can continue to mutate, making it harder to treat or fight off because people have no natural immunity.
The symptoms are similar to the common flu. They include fever, lethargy, lack of appetite, coughing, runny nose, sore throat, nausea, vomiting and diarrhea. Learn more about swine flu and how to treat it »
The virus spreads when an infected person coughs or sneezes around another person. People can become infected by touching something with the flu virus on it and then touching their mouth, nose or eyes.
The recent outbreak in China is a H5N1 strain of bird flu and is totally different than the Mexico City strain which is H1N1 variant strain.
CDC still can not update us the virulence of this Mexico City strain and how potent the strain can transmiss from people to people through airborne viral particles and how deadly the virus can be.
Even without the swine flu, 38,000 people dies from regular flu illness each flu season. But most are elderly, diabetic and on immunosupressed drugs, steroid, cycosporine, cellcept and other cyctotoxic and immunosupressed drugs.
The message is stay out of Mexico and away from most inner cities in the southern borders with high concentration of Hispanics such as Houston, Los Angeles.