This may confirm suspicions that parasitic worm infections like those common in parts of sub-Saharan Africa with unsanitary water supplies make people more vulnerable to HIV, Secor said.

• 这有可能确认那个疑惑，遭受寄生虫感染的那些位于撒哈拉以南非洲的相同地区，加上人们引用了不卫生的水，就使得当地人对HIV更加易感。