Health officials in Vietnam's Long An province today reported a human H5 case involving an 18-year-old man who is hospitalized in Ho Chi Minh City with pneumonia and other severe symptoms, according to foreign language media reports translated and posted by FluTrackers, an infectious disease news message board.
Long An province is in the Mekong Delta region of southern Vietnam. The patient is from Tan An, the provincial capital.
Dead poultry found near family's home
Authorities were first notified about the case on November 14, and officials are waiting on further sequencing results to characterize the N gene.
An investigation revealed hundreds of dead poultry at the patient's family home.
The country reported its last human H5N1 case in March. Different H5N1 clades circulate in Vietnam and other parts of Asia and have been linked to sporadic human cases, but none involving human-to-human transmission.
In April scientists warned of an H5N1 reassortant circulating across the Greater Mekong subregion that has infected both birds and people. It contains surface proteins of an older H5N1 clade (2.3.2.1c) that has circulated in parts of Asia with a newer clade (2.3.4.4b) that has circulated globally since 2022.