Grey heron infected with West Nile virus A grey heron in the Noord-Holland-Noord region has tested positive for the West Nile virus. The virus is rare in the Netherlands. Bas van de Meulengraaf
Article in The Lancet Infectious Diseases on RIVM research into Maternal pertussis vaccination Scientific journal The Lancet Infectious Diseases has published an article on RIVM research conducted into pertussis vaccination for pregnant women.