What is the typical severity of H9N2 bird flu in humans?

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H9N2 Bird Flu Typically Causes Mild Illness in Humans

The H9N2 bird flu virus generally results in mild illness in humans. This is according to information from the World Health Organization (WHO), which has observed this trend.
Mild Illness is the General Outcome

The H9N2 virus is noted for typically causing only mild symptoms when it infects humans. This characterisation is based on the general behaviour of the virus in human populations.
Sporadic Cases May Still Occur

Despite the usual mildness, the WHO has indicated that sporadic human cases of H9N2 infection can still occur. This is because H9N2 is one of the most widespread avian influenza viruses found in poultry globally.
Previous Human Infection in India

This recent case in West Bengal is the second confirmed human infection of H9N2 bird flu in India, with the first instance reported in 2019. The WHO confirmed the latest detection in a four-year-old child who had exposure to domestic poultry.

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What is the typical severity of H9N2 bird flu in humans?

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