Michaeleen Doucleff

Michaeleen Doucleff appears in the following:

Monkeypox isn't like COVID-19 — and that's a good thing

Tuesday, May 24, 2022

Although monkeypox's recent spread has caused concern, its similarities to smallpox have given the public health world a head start on combating it.


Rare monkeypox outbreak in U.K., Europe and U.S.: What is it and should we worry?

Wednesday, May 18, 2022

The cases point to possible sexual transmission of this cousin of smallpox — a previously unknown method of spread for monkeypox.


How COVID vaccines have boosted the development of an HIV vaccine

Thursday, May 12, 2022

During the pandemic scientists launched a vaccine in record-breaking time. Their successful use of mRNA technology could lead to progress in the decades-long effort for an HIV inoculation.


One of the first clinical trials of a new mRNA vaccine for HIV is underway

Monday, May 09, 2022

The COVID-19 pandemic is having a surprising silver lining — it's breathing new life into the fight against HIV by accelerating the development of a new type of HIV vaccine.


If you've had omicron before, are you safe from infection by the new variants?

Wednesday, May 04, 2022

New versions of omicron are circulating in the United States and South Africa. Two new studies shed light on the potential for future surges — and the risk factor if you've already had omicron.


A 4-year-old can run errands alone ... and not just on reality TV

Wednesday, April 20, 2022

A Japanese TV show now on Netflix, 'Old Enough!,' has sparked much debate about the wisdom of allowing very young kids to be very independent. Risky? Beneficial? Child development experts weigh in.


2 new omicron variants are spreading in N.Y. and elsewhere. Here's what we know

Thursday, April 14, 2022

The variants — BA.2.12 and BA.2.12.1 — have been detected in New York and other states as well as 5 other countries. One has a mutation that seems to give it an edge in evading the immune system.


Why hasn't my daughter caught COVID? 2 factors likely protect her — and maybe you too

Thursday, April 07, 2022

My 6-year-old has been exposed to SARS-CoV-2 at least four times and never tested positive. Many people fall into that category. Researchers have theories about why they've been able to ward it off.


Delta and omicron met up inside 1 person and made the Frankenstein hybrid 'deltacron'

Wednesday, March 23, 2022

That's how the so-called "deltacron" variant — a mashup of delta and omicron — came to be. This process of recombining tells us a lot about the possible past and future of SARS-CoV-2.


A new type of coronavirus variant is a mixture of omicron and delta strains

Tuesday, March 22, 2022

A new coronavirus variant is a bit like Frankenstein, with the head of omicron and the body of delta. Scientists are eager to learn more about the origins of hybrid variants like "deltacron."


Striking new evidence points to Wuhan seafood market as the pandemic's origin point

Thursday, March 03, 2022

Two studies point to a link between the animals at the seafood market and the spread of SARS-CoV-2 — foreshadowed by photos from 2014 of raccoon dogs and birds. A top virus sleuth gives the details.


Physical evidence indicates that the coronavirus emerged at Wuhan seafood market

Monday, February 28, 2022

Scientists have solid, physical evidence indicating the COVID pandemic began at a seafood market in Wuhan, China. Data suggest the virus jumped from an animal at the market into people at least twice.


Who might benefit from a 4th shot — and who might not

Tuesday, February 22, 2022

Some countries are moving ahead with plans to offer a fourth dose of COVID-19 vaccine. But studies are raising questions about the potential advantages of this extra booster.


As booster shot protections wane, here's the latest research on a 4th vaccine dose

Monday, February 21, 2022

Scientists now know that the potency of the booster shot wanes quickly after about three months. We look at the latest research on a fourth shot.


A geeky quiz says what kind of immune cell you are. Bonus: See our immune cell primer

Tuesday, February 15, 2022

Answer a few questions and find out what kind of immune cell you'd be — and learn more about these amazing cells that fight off infection.


Take a look at SARS-CoV-2's family tree. It's full of surprises

Wednesday, February 09, 2022

The family history of SARS-CoV-2 is not what virologists expected — and it sheds light on the coronavirus that launched a pandemic. Check out our illustration of the virus's family tree.


The future of the pandemic is looking clearer as we learn more about infection

Monday, February 07, 2022

Scientists are beginning to come up with answers to the question of how long antibodies from an infection can protect you — and what they'll protect you from.


A second version of omicron is spreading. Here's why scientists are on alert

Thursday, January 27, 2022

It's a sibling of the first omicron variant that swept the world. Is it more contagious? Does it cause severe disease? Will it keep current omicron surges going? Researchers are looking for answers.


A new version of the omicron variant has scientists on alert

Thursday, January 27, 2022

Another version of omicron is spreading in Asia and parts of Europe. And it shows signs that it could be slightly more contagious than omicron. Where did this new variant come from?


Booster longevity: Data reveals how long a third shot protects

Wednesday, January 19, 2022

Researchers in the U.K. have the first estimates for how long a third shot of the Pfizer vaccine will last. The findings are mixed.