Argentine authorities are investigating a possible link between the deaths of 14 children and an experimental vaccine they were taking as part of a clinical trial run by GlaxoSmithKline.
The deaths may be tied to the Synflorix vaccine, which is designed to fight pneumonia, ear infections and several other pneumococcal diseases.
A U.S. spokeswoman for GlaxoSmithKline said that the company is not attributing the deaths to the experimental vaccine, which is being tested in three Latin American countries and elsewhere around the world.
