New York Times: 5 Reasons to Think the Zika Virus Causes Microcephaly
“…[A] surge in microcephaly has been reported only in Brazil; a small increase was reported in French Polynesia, and a cluster of 32 cases is now under investigation in Colombia. For proof of the connection between infection with the virus and birth defects, scientists are waiting for the results of a large study of 5,000 pregnant women, most of them in Colombia. … Virtually all public health agencies already believe the virus is to blame for these birth defects and are giving medical advice based on that assumption. Here are the lines of evidence they cite…” (McNeil, 4/1).

Scientific American: Zika Vaccine Could Solve One Problem While Stoking Another
“When Thomas Monath, an expert on vaccines combating mosquito-borne diseases, thinks about developing an inoculation against Zika virus, he has a major concern: Guillain-Barré syndrome. … Mounting evidence suggests exposure to the mosquito-borne Zika is the culprit. Now that boost in Zika-linked Guillain (GBS) is stoking concerns that a vaccine designed to protect patients against Zika could inadvertently provoke more cases of the autoimmune condition…” (Maron, 4/1).