In: Biology
What are the consequences of flu virus evolution for vaccination strategy? (in-depth please)
Flu virus pandemic is a global outbreak of a new influenza A virus that is very different from current and recently circulating human seasonal influenza A viruses. flu attacks the lungs, nose and throat.children, older adults, pregnant women and people with chronic disease and weak immune systems are at high risk.
It spread by airborne respiratory droplets (coughs or sneezes).By touching a contaminated surface .By saliva (kissing or shared drinks).By skin-to-skin contact.