Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
The flu is caused by different types of viruses, including influenza A, B, and C viruses.
The flu vaccine program begins mid-October.
Source: https://www.cbc.ca/news/canada/newfoundland-labrador/nl-covid-fall-outlook-1.6958327?cmp=rss
"There are two types of influenza viruses that commonly infect humans namely A and B. The flu viruses are typically in circulation before the winter season in South Africa.