Officials from Costa Rica's Health Ministry on Monday confirmed that two women from the community of Sámara, in the northwestern province of Guanacaste, are the first two…

Although most of the interest these days is focused on the arrival in the country of the Zika virus, there's been a staggering rise in other -- and in…

It's one of the most relentless stalkers on Earth, using a tiny, needle-like probe to sip its victims' blood. It dines almost exclusively on humans and never…