By Anthony Zurcher
The World Health Organization has issued a report suggesting a possible rapid spread of the Zika virus across North and South America. The infection, generally carried by mosquitoes, has caused thousands of babies to be born with underdeveloped brains and also causes symptoms in adults such as fever. No current treatment is available to help combat the disease, and the Pan American Health Organization has urgently advised people to protect themselves with insect repellant. The governments of some South American countries, notably Brazil and Colombia, are even asking women to avoid pregnancy until daily inspections are conducted.