Epidemiology

Several large stickers are shown on the floor with yellow and black arrows with a person standing on one arrow going the opposite direction.

Discussion: The mental health impacts of reopening society

After more than a year of measures such as mask mandates and social distancing to prevent the spread of the coronavirus, communities around the world are adjusting to reopened workplaces and society. But ongoing concerns about the pandemic and challenges posed by variants have many people wary. The World’s Elana Gordon moderated a conversation with Harvard Chan School of Public Health’s Karestan Koenen, who explored mental health during this transition.

A woman sings while holding a music book in her hands in a soccer field six-feet away from another singer.

Choirs in the age of coronavirus: A new study looks at the risks of singing

COVID-19
Parents wait with their children to enter their elementary school in Sderot as it reopens following the ease of restrictions preventing the spread of the coronavirus in Israel, May 3, 2020.

Israel’s hurried school reopenings serve as a cautionary tale

A medical worker in protective suit checks a patient's records at Jinyintan hospital in Wuhan, the epicentre of the novel coronavirus outbreak, in Hubei province, China, Feb. 13, 2020. 

Climate change will make animal-borne diseases more challenging to predict

Climate Change
Doctors help each other with their protective suits during an Ebola virus drill in Santo Domingo, Dominican Republic.

An epidemiologist in Monrovia describes hazmat training — from hand washing to elbow bumps

Health
Ebola evacuation

An epidemiologist suggests we take cues from the AIDS crisis in dealing with Ebola

Health

While it may seem as though media attention surrounding the Ebola outbreak has dwindled, President Barack Obama has said that “we are nowhere near out of the woods yet in West Africa” — meaning volunteers are still needed. Physician and epidemiologist Sharon McDonnell is one of those volunteers, and she says her experience working during the AIDS crisis offers her some perspective.

An endangered mountain gorilla rests inside a forest in a Bwindi Impenetrable National Park in Rwanada.

We still don’t know for sure how Ebola reached humans

Health

Scientists are still trying to figure out when and how the Ebola virus first emerged in humans. Many believe that fruit bats are the so-called “reservoir hosts,” but that remains to be definitively proven. Science writer David Quammen ventured deep into the forest of central Africa to try to find out for his latest book “Ebola: The Natural and Human History of a Deadly Virus.”

Fruit bats like the ones pictured here are often key vectors for diseases like Ebola, and disturbing their habitats may have made humans more vulnerable.

Here’s how cutting down West African trees made us vulnerable to Ebola

Environment

Diseases that can move between animals and humans — called zoonotic diseases — make up a majority of infectious diseases that humans can get, scientists say. So it’s no wonder that out-of-control logging in West Africa has likely aided the spread of Ebola.

Some of the ultrastructural morphology displayed by an Ebola virus virion is revealed in this undated handout colorized transmission electron micrograph.

The current Ebola outbreak is huge, but at least it’s not spreading particularly quickly

Health

In terms of sheer numbers of cases, the current Ebola outbreak in West Africa is the biggest ever recorded. But analysis shows that the disease is not spreading as quickly as some diseases have in the past, which gives some hope that it might soon be contained.

Avian flu kills a Canadian, and more in today’s global scan

Global Scan

Canada is dealing with its first death from H5N1, known as avian flu. The victim recently returned from Beijing, where officials say she contracted the disease. Meanwhile, ’12 Years A Slave’ is expected to take home awards this season, though it’s a story that was almost lost to history. And police in the UK who carry guns will now have to wear body cameras. All in today’s Global Scan.