Influenza viruses can be divided into two types, influenza type A viruses and influenza type B viruses. Influenza A viruses can be further divided into subtypes on the basis of two proteins, hemagglutinin (H) and neuraminidase (N), found on the surface of the virus. Since 1977, two influenza A subtypes, A(H1N1) and A(H3N2), have circulated widely among people.
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Influenza A(H1N1) - update 18
Mexico has reported 942 laboratory confirmed human cases of infection, including 29 deaths. The United States has reported 642 laboratory confirmed human cases, including two deaths.
The following countries have reported laboratory confirmed cases with no deaths - Austria (1), Canada (165), China, Hong Kong Special Administrative Region (1), Colombia (1), Costa Rica (1), Denmark (1), El Salvador (2), France (5), Germany (9), Guatemala (1), Ireland (1), Israel (4), Italy (5), Netherlands (1), New Zealand (5), Portugal (1), Republic of Korea (2), Spain (73), Sweden (1), Switzerland (1) and the United Kingdom (28).
WHO is not recommending travel restrictions related to the outbreak of the influenza A(H1N1) virus.
Individuals who are ill should delay travel plans and returning travellers who fall ill should seek appropriate medical care. These recommendations are prudent measures which can limit the spread of many communicable diseases, including influenza.
Further information on the situation will be available on the WHO website on a regular basis.
- Alhamdulillah -
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