b a ckground: there is a little or no data available on the natural babesia bovis ( b . bovis ) infection in water buffaloes( buba l u s bubalis ) comparing to the available one for cattle. this study was conducted to investigate the natural b. bovis infection in water buffaloes in comparison to crossbred cattle under field conditions in egypt. m e t hods: a total of 35 buffaloes and cattle wer...

visceral leishmanisasis is endemic and zoonotic in several foci in ardabil province, north west of iran. the main objective of this study was to determine the natural promastigote infection of sand-flies in active seasons, during 1991-1995. sand-flies were caught by sticky traps, aspirator and cdc light traps from indoors and outdoors. altogether 2659 sandflies were dissected and identified. th...

Presentations at the 9th Conference on Retroviruses and Opportunistic Infections, held in Seattle, February 24 to 28, 2002, continued to shed light on the complex interactions between HIV and the immune system. Major topics of discussion included natural hosts of simian immunodeficiency virus (SIV) infection, the dynamics of T lymphocytes, the myriad mechanisms utilized by HIV to avoid host imm...

An estimated 170 million people worldwide are infected with hepatitis C virus (HCV), including approximately 3 million in the United States. Hepatitis C virus disease accounts for approximately 10,000 deaths annually in this country, with this number expected to increase by 2or 3-fold by 2020. It is estimated that HCV coinfection is present in 30% (approximately 240,000) of the individuals with...