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Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
H5N6 is one of the six main hemagglutinin (HA) subtypes of bird flu viruses to have infected people and cause acute respiratory illness.
The vaccine uses a specific portion of a flu protein, hemagglutinin (HA), to induce a broad immune response against influenza.
Source: https://www.canindia.com/us-nih-to-test-universal-flu-vaccine-based-on-mrna-tech/