3.Regular measles is caused by the measles virus, seriously, the species is the " measles virus" , of the genus Morbillivirus and family Paramyxoviridae.
5.Respiratory syncytial virus is part of the Pneumoviridae family, and it's transmitted when an infected person sneezes or coughs, spreading thousands of droplets containing the virus into the surrounding area, up to about two meters or six feet away.