Majority of Vaccination Bills Propose Increasing Exemptions, But Most Enacted Limit Exemptions

Although more antivaccination legislation was introduced between 2011 and 2017, bills that limited vaccine exemptions were significantly more likely to be enacted.

Study Finds Nasal Flu Vaccine Less Effective Than the Flu Shot

A recent meta-analysis of pooled individual patient-level data, researchers found reduced effectiveness of the quadrivalent live-attenuated influenza vaccine (LAIV4) against influenza A/H1N1pdm09 compared with inactivated influenza vaccine (IIV) in children and adolescents.

Human Vaccines Project Launches Study of How the Immune System Responds to the Flu

The Human Vaccine Project aims to understand how the human immune system can develop longer-lasting protection against influenza.

Tdap Booster Vaccine Receives Expanded FDA Indication

FDA granted Sanofi Pasteur’s Adacel Tdap absorbed vaccine expanded indication to include repeat vaccinations for tetanus, diphtheria and pertussis.

Common Misconceptions Are the Cause for Almost Half of U.S. Adults Skipping the Flu Shot

A new survey shows more than 40 percent of Americans haven’t been vaccinated against the flu and aren’t planning to be due to misconceptions.

Severe Flu Increases Risks for Pregnant Women and Their Babies

A new study shows pregnant women hospitalized in the ICU with flu are four times more likely to deliver prematurely and four-and-a-half times more likely to have a baby of low birth weight.

Cervical Cancer Vaccines Safe and Effective in Girls and Women

A study that examined data from more than 73,000 girls and women shows vaccines designed to prevent infection with human papillomavirus (HPV) are effective in protecting against precancerous cervical lesions in women, particularly in those vaccinated between age 15 and 26 years.

FDA Approves HPV Vaccine for 27- to 45-Year-Old Men and Women

Merck’s Gardasil 9 human papillomavirus (HPV) vaccine has been approved by the U.S. Food and Drug Administration (FDA) for an expanded indication for men and women between the ages of 27 years and 45 years.

Study Finds Vaccines Don’t Weaken Babies’ Immune Systems

Researchers conducted a study that examined whether the childhood vaccine schedule was associated with an increased risk of infections not targeted by vaccines.

Study Finds Mumps Vaccine Protection Wanes Over Time

A recent meta-analysis of six studies of mumps vaccine effectiveness conducted in the U.S. found protection against mumps lasts an average of 27 years after the last dose of the vaccine.