Influenza webpage of the Pan American Health Organization (PAHO) and the WHO Regional Office for the Americas http://new.paho.org/hq/index.php?option=com_joomlabook&Itemid=259&task=display&id=28 Home page of the WHO Regional Office for Africa (AFRO)http://www.afro.who.int/ Home page of the WHO Regional Office for South East Asia (SEARO)http://www.searo.who.int/ Influenza page of the WHO Regional Office for Europe (EURO)http://www.euro.who.int/influenza Home page of the WHO Regional Office for the Eastern Mediterranean (EMRO)http://www.emro.who.int Influenza A (H1N1) webpage of the WHO Regional Office for the Eastern Mediterranean (EMRO)http://www.emro.who.int/csr/h1n1/ WHO Regional Office for the Western Pacific (WPRO)http://www.wpro.who.int/health_topics/influenza/