H3N2 virus normally circulates in pigs and then infects humans. “Viruses that normally circulate in pigs are “swine influenza viruses.” When these viruses infect humans, they are termed “variant” viruses,” explains the US CDC.Know what helps H3N2 virus spread
H3N2 virus normally circulates in pigs and then infects humans. “Viruses that normally circulate in pigs are “swine influenza viruses.” When these viruses infect humans, they are termed “variant” viruses,” explains the US CDC.
