As we continue to try and “open up,” much is made of herd immunity. Herd immunity was the putative, underlying rationale for some countries to forgo quarantine and lockdowns. But what exactly do we mean when we talk about herd immunity? 
Plenty of attention is focused on the growing number of cases in China of the Wuhan coronavirus -- also known as 2019-nCoV -- and those around the world. According to the New York Times, as of this writing, there are at least 132 reported deaths and nearly 6,000 confirmed cases of the disease. While the number of fatalities continues to grow, let's take a moment to understand what these numbers might mean.
Our national experience of influenza, as one disease with a set season, makes it difficult to recognize that flu is not a monolith. The global exposure to influenza has a lot more variation, and vaccination rates are influenced by much more than we might expect.
When is it safe to stop vaccinating against measles? Or against other rare and infectious diseases? In short, vaccinating against them can cease once the threat of future transmission is deemed sufficiently low.
Death knells are beginning to ring for poliovirus. The CDC reports that, in 2014, there were 359 new cases of wild poliovirus in nine countries. Just one year later, the number of new cases dropped to 74, a nearly 80% reduction.
At last: we in public health have been awaiting an expert opinion on vaccine safety from media celebrity Jim Carrey for such a long time and now he has spoken! He has strong opinions, but each one is Dumb and Dumber than the last. And his words can do much harm.
New research found that a single dose of the bivalent human papillomavirus (HPV) vaccine (Cervarix) may offer a similar level of protection against the serotypes of HPV types 16 and 18, which cause 70 percent of cervical cancers as the current two and three dose schedules. The findings come from a new analysis of two large phase
The American Medical Association (AMA) the largest association of physicians in the United States has called for an end to non-medical exemptions for vaccinations. They argued that there is no scientific basis for non-medical (philosophical or religious) exemptions and these exemptions put the public s health at risk. AMA doctors
In the debate between public health and personal choice, the Vermont House came down on the side of science and voted to repeal an earlier bill that allowed parents to avoid vaccinating their children based on philosophical beliefs
We ve written several times about the Disneyland measles outbreak that occurred earlier this year. A total of 147 people were sickened in the US, and infections also spread to Mexico and Canada. The outbreak once again sparked the debate about vaccinations. With
Continuing the assault on anti-scientific beliefs and quackery that he thoroughly eviscerated in his previous book, Do You Believe in Magic-The Sense and Nonsense of Alternative Medicine, Dr. Paul Offit, the chief of the division of infectious diseases at Children s Hospital of Philadelphia, has now set his sights on another appalling practice the substitution of prayer for proper medical care.
This past Sunday, April 12th, marked the 60th anniversary of Jonas Salk s polio vaccine being deemed safe, effective and potent after the largest clinical trial for a vaccine in history. The inactivated polio vaccine was licensed by the federal