Respiratory syncytial virus is an RNA virus that belongs to genus Pneumovirus, family Pneumovirinae. It’s mainly spread by droplet transmission, and direct contact of finger contaminated by respiratory syncytial virus with nasal mucosa and ocular mucous is also an important route of transmission. Respiratory syncytial virus is a cause of pneumonia. Upon incubation period, respiratory syncytial virus will cause fever, running nose, cough and sometimes pant. Respiratory syncytial virus infection may occur among populations of any age groups, where senior citizens and people with impaired lungs, heart or immune system are more likely to be infected.