The quadrivalent live attenuated influenza vaccine — also known as the nasal spray vaccine — does not exacerbate asthma in children aged older than 4 years, according to data from a randomized controlled trial published in Pediatrics.
The quadrivalent live attenuated influenza vaccine (LAIV4) is preferred by some parents and children as a relatively painless alternative to the more commonly administered inactivated influenza vaccines, which are delivered via intramuscular injection.
The authors of the new study noted that the CDC’s Advisory Committee on Immunization Practices