Cases of H7N9 avian influenza in China have had experts worldwide on edge since the end of March. There is still much to be learned about the new bird flu strain, inspiring researchers in Vietnam to probe deeper.
Cases of bird flu in China have been keeping officials worldwide on edge for weeks as numbers of new patients steadily increased.
Being sick while pregnant certainly isn't fun. Having the flu while pregnant is even worse. But being down with the flu during pregnancy might be linked to longer term concerns, too.
One of the concerns parents might have with the flu vaccine is side effects in children with pre-existing conditions, such as inflammatory bowel disease.
News has been developing fast from the H7N9 bird flu outbreak in China. But what do we know about the patients who have been infected with the disease? Are there common threads in these cases?