You may have heard about the spreading Zika virus, a mosquito borne pathogen that can severely affect pregnant women and their children. The head of the World Health Organization has called an emergency meeting for Monday to discuss what she is calling a "pandemic" with the virus "spreading explosively" throughout the Americas. CNN: "The level of concern is high, as is the level of uncertainty," Dr. Margaret Chan, WHO's director-general, told her organization's executive board members. "We need to get some answers quickly." The lack of any immunity to Zika and the fact that mosquitoes spreading the virus can be found most "everywhere in the Americas" -- from Argentina to the southern United States -- explains the speed of its transmission, said Dr. Sylvain Aldighieri, an official with the WHO and Pan American Health Organization. Aldighieri gave the estimate for Zika infections (including people who do not...(Read Full Post)