2010 - Republic of South Africa
In February 2010, South Africa's National Institute of Communicable Diseases (NICD) informed CDC of an ongoing outbreak of Rift Valley Fever affecting both animals and humans in seven provinces in that country. As of May 3, 2010, NICD has reported a total of 172 human cases of RVF and 15 deaths. Hemorrhagic complications and hepatitis were noted in patients with severe disease. Occupation data for 139 of the 172 indicates that 81% had direct contact with animals through their work with RVF-infected ruminants.
2006 - Kenya, Tanzania, and Somalia
In December 2006, the Kenya Ministry of Health received reports of unexplained fatalities associated with fever and generalized bleeding from Garissa District in North Eastern Province. The outbreak was confirmed by isolation of RVF virus from 10 patients. CDC deployed a 6-person team from the Viral Special Pathogens Branch to assist in outbreak response, diagnostic assays, database creation and management, technology transfer and public health messaging. The team, in collaboration with CDC's International Emerging Infections Program (IEIP) Kenya, WHO, MSF and other partners, engaged in case finding, determination of risk factors, and a follow-up study. Like earlier outbreaks of RVF, this outbreak was also associated with recent heavy rainfalls.
2000 - Saudi Arabia and Yemen
In September 2000, the Ministry of Health of the Kingdom of Saudi Arabia, and subsequently the Ministry of Health of Yemen received reports of unexplained hemorrhagic fever in humans and associated animal deaths from the southwestern border of Saudi Arabia and Yemen. CDC confirmed the outbreak to be caused by Rift Valley fever virus.
For more information, see: