How does the Influenza A(H1N1) virus make us sick?
The Influenza A(H1N1) virus is a virus that mainly affects our respiratory system. It penetrates cells lining our airways and replicates inside them. When they are released from infected cells, the infected cell is damaged. As our immune system fights the infection with an inflammatory response, it may cause swelling in our airways and we may have fever, cough, sore throat, and difficulty in breathing.
