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.
Typical symptoms resemble the common cold. However, RSV infection can also result in pneumonia, especially in the very young, the very old or those with weakened immune systems. However, mild or unnoticeable illness may occur. Symptoms may persist for a few days to a number of weeks.