The number of reports in the literature on dengue outbreaks in various parts of south China is increasing. This trend is likely contributed to by multiple factors, chief among which is the increase in trade and human movement in and out of China from the Southeast Asian region where dengue is firmly endemic. However, a holistic picture of dengue in China and how the public health authorities ar...

In July and August 1994, an outbreak of Bolivian hemorrhagic fever (BHF) occurred among an extended family living in the city of Magdalena (1994 population estimates 5,300), Itenez Province, Department of Beni, Bolivia (see map). BHF, caused by the Machupo arenavilus, is known to be endemic only in Bolivia. The principal reservoir of the Machupo virus is the small rodent Calomys callosus. This ...

Syphilis is caused by infection with Treponema pallidum subsp. pallidum, a not-yet-cultivable spiral-shaped bacterium that is usually transmitted by sexual contact with an infected partner or by an infected pregnant woman to her fetus. There is no vaccine to prevent syphilis. Diagnosis and treatment of infected individuals and their contacts is key to syphilis control programs that also include...