The CDC received a candidate vaccine virus for swine flu Friday . A person who is infected with the H1N1 influenza virus can develop symptoms such as fever, cough, runny nose, sore throat and body aches within two to four days of being exposed to the virus, according to Suitable viruses will hopefully be sent to manufacturers by end of next week . In one vaccine method , viruses swap genes in egg . Only after those tests are complete would the CDC , World Health Organization and other government health authorities decide whether to recommend mass production . Another technique uses reverse genetics instead of growing viruses in eggs .
The CDC received a candidate vaccine virus for swine flu Friday . A person who is infected with the H1N1 influenza virus can develop symptoms such as fever, cough, runny nose, sore throat and body aches within two to four days of being exposed to the virus, according to Suitable viruses will hopefully be sent to manufacturers by end of next week . In one vaccine method , viruses swap genes in egg . Another technique uses reverse genetics instead of growing viruses in eggs .