Seven science and tech breakthroughs you may have missed this year
Scientists uncover key to future hepatitis C vaccine
How flu got milder since 1918 pandemic
How to fight Covid with light
Moderna to develop mRNA vaccines for Ebola
Yale’s new nasal vaccine can boost an mRNA shot
Pfizer’s RSV vaccine for pregnant women protects newborns
Flu and RSV can fuse into a new kind of virus
New vaccine prevents 94% of severe RSV cases 
As Ebola reaches Ugandan capital, vaccines race to catch up