As the back-to-school season begins, health experts emphasize the importance of ensuring children's vaccinations are up-to-date to protect against preventable diseases. Dr. Frank Betanski from Baylor Scott and White Health and Dr. Nipunie Rajapakse from Mayo Clinic highlight critical vaccines such as DTap, MMR, and HPV, especially with rising measles cases and increased whooping cough incidences. Connecticut has reported a significant spike in whooping cough cases, attributed to delays in vaccinations during the COVID-19 pandemic, underscoring the need for timely immunizations. Idaho's declining immunization rates also pose a threat to herd immunity. Health officials recommend regular booster shots for older children and adults to maintain immunity against evolving diseases like COVID-19.