An anthropologist works in American Samoa, taking advantage of the island's longstanding tattoo culture to tease out the effects tattoos have on the body's immune function.
While some viruses make us sick, others can fight against bacteria, or protect us from more harmful viruses.
When a certain percentage of a population has been vaccinated, it prevents an infectious disease from spreading. But that threshold depends on the disease.
How can a tiny flu virus make you feel so bad, all over? Here's what's behind your high temperature, muscle aches and other flu symptoms.
Adults must let go of their fears of injury and kidnapping. Children need free outdoor play to build physical immunity, psychological health, executive functioning and social skills.
In Canada, the age of consent for health-care decisions is assessed on a case-by-case basis. It can be age 14, or sometimes even younger.
Measles cases in the US have reached their highest in 25 years. A bioethicist argues why parents opposed to vaccination are not just wrong about the science, but about the morals.
Billboards spreading misinformation on the risks of vaccination have popped up around American cities. A bioethicist explains why decisions not to vaccinate children are indefensible.
US law says the president can't be indicted, an echo of ancient Roman law. The efforts Roman leader Julius Caesar made to maintain his immunity is a cautionary tale for America's political system.
Nobel laureate Peter Doherty explains immunity.
Travel allows us to see the world – and bring foreign diseases home. Here's why spreading disease is easier than ever.
There are numerous examples of the havoc infectious diseases can play on communities that have not previously been exposed to them.
While not perfect, the seasonal flu vaccine is the best way to protect against influenza. There are a few changes to the flu vaccine and what is available this year. Here's what you need to know.
The flu vaccine isn't perfect but it's the best way to protect against these potentially harmful viruses. Most children aged six months to five years are eligible for a free vaccine in 2018.
The gun industry has been virtually immune from liability for the deaths and injuries caused by its products since 2005. Can this change?
Flu virus mutates so quickly that one year's vaccine won't work on the next year's common strains. But rational design – a new way to create vaccines – might pave the way for more lasting solutions.
It's still unclear whether Zimbabwe will manage an effective transition to participatory democracy and freedom. And the current signs are not encouraging.
Using the right metaphor in science is important.
Vaccines against multiple diseases in one jab strengthen kids' immune systems, not weaken them. Here's why we shouldn't fear these combination vaccines.
With so many microbes capable of hijacking and destroying us, how are we, as a species, still enduring?