The Centers for Disease Control and Prevention (CDC) reported on a human infection with a novel influenza A (H1N2) variant virus in California.
The infection occurred in an adult ≥ 18 years of age. The patient was not hospitalized and has recovered from their illness. The patient had direct contact with swine prior to specimen collection. Respiratory illness was reported among contacts of the patient, however this occurred during a period of high respiratory illness activity and no specimens from the contacts were received for testing. No ongoing person-to-person transmission has been identified associated with this case.
This is the third human infection with novel influenza A virus that has occurred during the 2021-22 influenza season in the United States. One influenza A(H3N2) variant virus infection was reported by Ohio and one influenza A(H1) variant virus (neuraminidase not determined) infection was reported by Oklahoma.
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