This article from Science on Moderna’s new RSV vaccine illustrates the challenges facing developers of RSV vaccines for children As you know the RSV vaccine construct was used for the book Bad Pharma as we knew it was a needed vaccine being currently developed by numerous manufacturers. RSV vaccines have been difficult to develop since the 1960s due to their tendency to provoke an exagerrated immune response when the vaccinated individual is exposed to the live RSV virus. This new report shows a weak signal of that same concern – enough to make people continue to tread very carefully during the development of new RSV vaccines for children Here is a link to the story