How to stop the measles outbreak in South Carolina?

Simple: get people vaccinated. Dr. Oz agrees. The New York Times reports: Dr. Oz, the Centers for Medicare and Medicaid Services director, told CNN on Sunday that there was a simple solution to the raging measles outbreak in South Carolina, which has infected more than 900 people and become the largest U.S. outbreak in recent…

Direct and Indirect Effects of COVID-19 Vaccine

Clinical trials focus in-sample (direct) effect of vaccines on health outcomes (e.g., decrease in illness, hospitalization, emergency department use, and death). Typically, however, clinical trials do not test whether the vaccines reduce transmission. FDA do not require this as it would be logistically challenging and costly to estimate indirect effects of vaccination within a clinical…

2025 Measles Outbreak

Here are statistics from the CDC about the 1,197 individuals (as of 13 June 2025) that have been infected with measles during the 2025 outbreak: 793 were children (347 (29%) aged <5; 446 (37%) aged 5-19) 5% were previously vaccinated (2% with 1 MMR dose; 3% with 2 MMR doses) 144 (12%) were hospitalized 3…

Vaccine choice = more measles infection

Texas is moving to allow for more freedom of choice with respect to receipt of vaccines. The Economist reports: Texas legislators meeting in Austin, the state capital, are debating new laws to relax vaccine rules, urged on by Texans for Vaccine Choice (TFVC). On February 18th activists in “Come and Make Me” shirts took to…

Trump, RFK Jr. and Vaccines

The Washington Post reports on a meeting between President-elect Trump, Robert F. Kennedy, Jr. and a number of CEOs of pharmaceutical firms. When the topic turned to vaccines, the discussion was not about banning the products, the three people said. Kennedy spoke about the need for better study of the vaccine dosing schedule for newborns…

Risk compensation after COVID-19 vaccination

Could COVID-19 be more efficacious than effective? This could be the case if individuals receiving COVID-19 engaged in ‘risk compensation’. In short, without a COVID-19 vaccine, individuals may have refrained from travel and engaged in social distancing. After a COVID-19 vaccine, these same individuals could have been more likely to travel and less likely to…

The benefit of HPV vaccination

In part due to the COVID-19 pandemic, vaccination have become a hot button issue. This is true even for non-COVID vaccines that have proven significant health benefits, such as those for human papillomavirus vaccines (HPV). Although betweeen 2016 and 2021 the share of teenagers receiving their HPV vaccination series increased from 60% to 77%, Bloomberg…