Monthly Archives: November 2009

Cause The yellow fever virus, an arbovirus of the Flavivirus genus. Transmission Yellow fever in urban and some rural areas is transmitted by the bite of infective Aedes aegypti mosquitoes and by other mosquitoes in the forests of South America. … Continue reading →

Cause Salmonella typhi, the typhoid bacillus, which infects only humans. Similar paratyphoid and enteric fevers are caused by other species of Salmonella, which infect domestic animals as well as humans. Transmission Infection is transmitted by consumption of contaminated food or … Continue reading →

Cause The tick-borne encephalitis (TBE) virus is a flavivirus. Three subtypes of the causative agent are known. The most common subtypes are the European subtype, the Far Eastern subtype (Spring Summer encephalitis) and the Siberian subtype. Other closely related viruses … Continue reading →