COVID-19 INFORMATION. NEW COVID-19 Vaccine Guidelines: Expanded Age Eligibility and Booster Shots. Mountain View Medical Group will be offering the pediatric Pfizer-BioNTech COVID-19 vaccine to everyone 5 years of age and older when the pediatric vaccine becomes available.Both Moderna and Pfizer are available for the 3rd booster shot to all the following populations that are considered fully ....