hantavirus
| Spherical virus causing various haemorrhagic diseases with renal complications. The virus was first identified in 1976 in Korea (and named after Hantaan River), where field mice are its main carriers. In China the hantavirus affects around 100,000 people annually. It also circulates in Japan and Russia, and a nonfatal form exists in parts of Europe, surviving in bank voles and yellow-necked field mice. Its incubation period is 12–21 days. |
| An outbreak of hantavirus in Argentina in December 1996 was the first recorded instance in which the virus was transmitted person to person rather from than spread by rodents. |
| A new type of hantavirus was discovered in 1997 in Finland. Topografov virus is carried by lemmings. |
| Hanta virus infections remain rare in the US, with 362 cases and 132 deaths reported in total for the years 1993–2004. |
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