Coronavirus - page 4 | Live Science

Here's what you need to know about COVID-19 breakthrough infections

By Yasemin Saplakoglu published 16 August 21

The COVID-19 vaccines that are used in the U.S. are highly effective. But sometimes, the coronavirus can still infect people who are vaccinated, causing so-called breakthrough infections.

A nurse checks on a patient in the ICU Covid-19 ward at NEA Baptist Memorial Hospital in Jonesboro, Arkansas, on Aug. 4, 2021.

How deadly is the coronavirus delta variant?

By Rachael Rettner last updated 27 August 21

Early data suggests the delta variant may cause more severe disease.

FDA to authorize 3rd COVID-19 vaccine dose for immunocompromised people

By Yasemin Saplakoglu published 11 August 21

The FDA is planning to update the emergency use authorizations for Pfizer and Moderna's COVID-19 vaccines to include a third dose for immunocompromised people.

Which COVID-19 vaccine has the lowest rate of breakthrough infections?

By Nicoletta Lanese published 11 August 21

Hints in the data suggest the Johnson & Johnson vaccine has the most breakthroughs, while Moderna has the least.

four healthcare workers sitting in chairs receiving vaccines from four other healthcare workers standing to their left sides

Vaccine-resistant coronavirus 'mutants' are more likely when transmission is high, new model finds

By Nicoletta Lanese published 6 August 21

A new model lays out when vaccine-resistant mutants are most likely to emerge.

A healthcare worker vaccinating a person.

Vaccines cut chance of being infected with delta variant by half, UK study finds

By Yasemin Saplakoglu published 4 August 21

The study examined nearly 100,000 people who took COVID-19 swab tests at home between June 24 and July 12.

person in protective suit and face shield puts a COVID-19 swab test into the mouth of a Nanjing resident

Chinese cities enter lockdown as delta variant spreads

By Nicoletta Lanese published 4 August 21

The outbreak has been traced back to the international airport in Nanjing.

NYC will require COVID-19 vaccination proof for indoor dining, gyms

By Yasemin Saplakoglu published 3 August 21

New York City will become the first city in the U.S. to require proof of vaccination for such activities.

Foot traffic in Provincetown, Massachusetts on July 20, 2021. A recent COVID-19 outbreak in the area has led to hundreds of infections, including many among fully vaccinated people.

How 350 vaccinated people caught COVID-19 in huge Cape Cod outbreak

By Rachael Rettner published 30 July 21

The outbreak has changed our understanding of the coronavirus delta variant.

'The war has changed,' against new delta variant, internal CDC presentation says

By Yasemin Saplakoglu published 30 July 21

The coronavirus delta variant may be as contagious as chickenpox and cause more severe illness than previous variants, CDC says.

The real reason CDC is updating their mask guidelines

By Yasemin Saplakoglu last updated 28 July 21

On Tuesday (July 27), the Centers for Disease Control and Prevention updated their coronavirus mask guidelines. Here's why.

CDC expected to revise coronavirus mask guidance as delta spreads

By Yasemin Saplakoglu last updated 27 July 21

The announcement will likely be that people who live in areas with high or substantial COVID-19 transmission should start wearing masks again.

A coronavirus particle binds to a human cell.

Will we ever find COVID-19's 'Patient Zero?'

By Stephanie Pappas published 27 July 21

Researchers have narrowed down the emergence of SARS-CoV-2 to a few weeks in the fall and to a few animal suspects.

close up of a person's right eye from the right side of their face

Nerve damage in cornea could be sign of 'long COVID,' study hints

By Nicoletta Lanese published 26 July 21

The results align with other evidence that some symptoms of long COVID may arise from nerve damage.

A nurse fills a syringe with COVID-19 vaccine in Reading, Pennsylvania.

Dozens of medical groups urge COVID-19 vaccination mandates for health workers

By Rachael Rettner published 26 July 21

The signatories include the American Medical Association, the American Nurses Association, and the American Academy of Pediatrics.

This illustration shows a coronavirus particle in blood plasma showing the Y-shaped immunoglobulin G antibodies (IgG, light blue) bound to the coronavirus' spike proteins (red). IgG antibodies are Y-shaped proteins produced by B-lymphocyte white blood cells as part of an immune response. Immunoglobulin M antibodies (IgM) are also shown in light blue.

How early was the novel coronavirus circulating?

By Rebecca Sohn published 24 July 21

A man getting a nasal swab COVID-19 test.

We may finally know why the delta variant of coronavirus is so infectious

By Yasemin Saplakoglu published 23 July 21

People infected with the delta variant of the novel coronavirus may be carrying more than a thousand times more virus particles, according to an early new study.

A security guard stands outside the Huanan Seafood Wholesale Market where the coronavirus was first detected in Wuhan in January 2020.

7 facts about the origin of the novel coronavirus

By Rachael Rettner published 21 July 21

Some theories point toward a natural origin and others claim the virus accidentally leaked from a lab.

Memorials hang from the front gate of Greenwood Cemetery during an event and procession organized by Naming the Lost Memorials to remember and celebrate the lives of those killed by the Covid-19 pandemic on June 08, 2021 in New York City.

US life expectancy declined by a staggering 1.5 years in 2020

By Rachael Rettner published 21 July 21

The decline can largely be attributed to deaths from COVID-19.

A doctor holding a SARS-CoV-2 test swab.

Delta variant now makes up 83% of new COVID-19 cases in US

By Yasemin Saplakoglu published 20 July 21

The delta variant now makes up 83% of new U.S. cases, Dr. Rochelle Walensky, the director of the Centers for Disease Control and Prevention said on Tuesday (July 20).