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Prior to the mid-1990s, WNV disease occurred only sporadically and was considered a minor risk for humans, until an outbreak in Algeria in 1994, with cases of WNV-caused encephalitis, and the first large outbreak in Romania in 1996, with a high number of cases with neuroinvasive disease. WNV has now spread globally, with the first case in the Western Hemisphere being identified in New York City in 1999.

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9y ago
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9y ago

Prior to the mid-1990s, WNV disease occurred only sporadically and was considered a minor risk for humans, until an outbreak in Algeria in 1994, with cases of WNV-caused encephalitis, and the first large outbreak in Romania in 1996, with a high number of cases with neuroinvasive disease. WNV has now spread globally, with the first case in the Western Hemisphere being identified in New York City in 1999.

It was first identified in the West Nile subregion in the East African nation of Uganda in 1937.

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16y ago

The virus was first isolated in 1937 in the West Nile district of Uganda.

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13y ago

By our common Dusk to Dawn Household mosquito.

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11y ago

First identified in1937 in Uganda in Eastern Africa. Discovered in 1999 at New York.

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9y ago

It was first identified in the West Nile subregion in the East African nation of Uganda in 1937.

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9y ago

in Africa

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11y ago

West Nile

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Q: When did the West Nile virus start?
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