Definition of diversify for English Language Learners. : 1  to change (something) so that it has more different kinds of people or things. : 2  to produce or sell more kinds of products : to increase the variety of goods or services produced or offered by (someone or something)
Respiratory syncytial virus (RSV) Respiratory syncytial virus (RSV) is a very common virus that leads to mild, cold-like symptoms in adults and older healthy children. It can be more serious in young babies, especially those in certain high-risk groups. RSV is the most common germ that causes lung and airway infections in infants and young children. Most infants have had this infection by age 2. Outbreaks of RSV infections most often begin in the fall and run into the spring.
RSV Transmission. 1  premature infants. 2  young children with congenital heart or chronic lung disease. 3  young children with compromised (weakened) immune systems due to a medical condition or medical treatment. 4  adults with compromised immune system. 5  older adults, especially those with underlying heart or lung disease.