A patient suffering from Guillain-Barre syndrome recovers in a hospital ward in San Salvador on Jan. 27. Researchers are trying to determine whether there is a link between the disorder, which can cause weakness and paralysis, and the mosquito-borne Zika virus.
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Dr. Margaret Chan is director-general of the World Health Organization. In her first major address on Zika, delivered Thursday in Geneva, she said: "Questions abound. We need to get some answers quickly."
Maxine Parrish, 18 months old, is one of the youngest people to enjoy a new bike lane in Denver last month. Two avid bicyclists argue that better bike infrastructure allows slower cycling and a wider age-range of riders.
RJ Sangosti/Denver Post via Getty Images