FLU A：What's the difference between a cold and the flu? | Live Science

flu a   royal flush slot The flu, in contrast, is caused only by influenza viruses. Most commonly, it's caused by the two main types of viruses that cause seasonal flu epidemics in humans: influenza A and B

virus influenza a The influenza AH1N1pdm09 viruses belonged to clade 6B.1A.5a.2a, while the influenza AH3N2 viruses evolved from clade 3C.2a1b.2a.1a to 3C.2a1b.2a.2a.3a.1. Compared with the vaccine strain of the Northern Hemisphere of the current year, multiple amino acid substitutions and glycosylation sites changes were observed in the HA protein that most

flu a Influenza, also known as the flu, is an infection caused by influenza viruses. There are three main types - Type A, Type B and Type C. Influenza A H1N1-2009, Influenza A H3N2 and Influenza B are the most common influenza viruses circulating globally and in Singapore