Respiratory syncytial virus, or RSV, is a common respiratory virus that was unknown to many until recently– yet it causes more than 100,000 deaths in children under 5 per year. Here are four things you need to know about RSV: 1️⃣ RSV affects younger age groups more severely. 2️⃣ RSV is surging now as pandemic protocols fall away. 3️⃣ When infants contract RSV, the outcome largely depends on where they live. 4️⃣ There is no existing vaccine for RSV that can protect infants Link in bio to read more about RSV symptoms, its effects, and the next steps for potential vaccine development. Photo credit: ©Bill & Melinda Gates Foundation/Saumya Khandelwal