The flu that is currently going around is type B. About 97 percent of flu virus cases detected last week were type B. In contrast, type A, which was dominant during the winter, has sharply declined.

All four flu pandemics — in 1918, 1957 and 1968 and the swine flu pandemic of 2009 — were caused by Type A viruses. Influenza B viruses, however, only circulate in humans.

Influenza A and B are the most common types of flu in humans. Here, ... However, influenza A is the only type responsible for flu pandemics, which are global epidemics.

Influenza A is more commonly seen earlier in flu season, in the winter months, while influenza B seems to crop up later, ...

Flu A tends to cause more ear infections than flu B, but type B is associated with more seizures, vomiting and diarrhea, said Dr. Sherif Mossad, an infectious disease doctor at the Cleveland Clinic.

Unlike type A, influenza B only infects humans, he explains, “so it changes more slowly and it tends to be milder.” But on an individual level, influenza B infections have the potential to ...

Influenza A is more commonly seen earlier in flu season, in the winter months, while influenza B seems to crop up later, around early spring. Dumford expects the shift to happen this year in late ...

(NEXSTAR) – The flu is spreading far and wide across the U.S. – and influenza A is largely to blame. Of all the flu tests reported to the Centers for Disease Control and Prevention since the ...

The dominance of influenza A at this point in the flu season is to be expected. Influenza A is more commonly seen earlier in flu season, in the winter months, while influenza B seems to crop up ...

Influenza A is more commonly seen earlier in flu season, in the winter months, while influenza B seems to crop up later, around early spring. Dumford expects the shift to happen this year in late ...