An infection with the Zika virus usually has no symptoms. Any symptoms that do occur are usually very mild. However, in Brazil doctors saw more babies with microcephaly (small heads) at the time of the outbreak of the Zika virus. The link between the Zika virus and microcephaly is now being studied intensively. The Zika virus cannot spread in The Netherlands. As a precaution RIVM provides travel advice for pregnant women and women who want to become pregnant for areas where the Zika virus is prevalent.
The Zika virus is spread by the yellow fever or dengue mosquito (aedes aegypti). Although the disease (Zika fever) is usually fairly mild, there are increasingly more indications that an infection during pregnancy can harm the unborn child.
In dit bulletin wordt een overzicht gegeven van de smogsituatie in de periode april tot en met september 2007 voor ozon. Dankzij de sombere zomerperiode van 2007 zijn er maar 3 dagen met matige smog door ozon geweest.
Diseases that are naturally transmitted from warm-blooded animals to humans are called zoonoses. In Europe zoonoses originating from wildlife sources and transmitted by arthropods are considered to become increasingly important in the future. Climate and ecological changes may favour already existing arthropods to expand to other regions and thus new pathogens can be introduced in Europe.