I know over prescribing antibiotics is a problem but the opposite is also true some times.
My Mother was in the hospital and dying from something like pneumonia. They changed doctors because the current one went on vacation. The old Dr. who was just about to retire, gave Mother an antibiotic and she almost immediately starting getting better.
Last year, my daughter kept on getting respiratory viruses. We would wait about 10 days, and it it started getting worse put her on the anti-biotics. It would immediately clear up.
We’re trying prevention this year to see if she gets sick less. She started allergy shots, she’s on lots of vitamin D, she is taking a nasal spray, and a inhaled steroid. It’s too early to see if it’s working.