Influenza A virus subtype H7N4

Influenza A virus subtype H7N4 is a subtype of the Influenza A virus that has been identified in birds in the past. This subtype is a rare but potentially serious cause of influenza in humans.

History

The first recorded case of a human being infected with this subtype occurred in China in 2018. The patient was a 68-year-old woman who had contact with live poultry. She was hospitalized and recovered after treatment. This case marked the first time that the H7N4 subtype was found to have infected a human.

Characteristics

Like all Influenza A viruses, H7N4 is an orthomyxovirus. It has two key proteins on its surface: H7 (hemagglutinin) and N4 (neuraminidase). These proteins play a crucial role in the virus's ability to infect and spread.

Transmission

The primary hosts of the H7N4 subtype are birds. The virus is transmitted to humans through direct contact with infected birds or their droppings, or through the air when an infected bird coughs or sneezes.

Prevention and Treatment

Prevention of H7N4 infection primarily involves avoiding exposure to infected birds. In the event of an outbreak, culling of infected birds may be necessary. Treatment typically involves the use of antiviral medications.

See Also

• Influenza A virus subtype H5N1
• Influenza A virus subtype H7N9
• Influenza A virus subtype H7N7
• Influenza A virus subtype H7N3

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