Lisa M. Krieger –

This undated combination of microscope images provided by Monash University in March 2021 shows different "iBlastoids" (embryo-like structures) stained to highlight different cell types. Scientists made the cell structures in a lab and say they will allow for more research into the earliest stages of human development without running afoul of restrictions on using real embryos. (Monash University via AP)

De una muerte, miles de células ayudan a los científicos a construir un ‘atlas’ de referencia universal

May 17, 2022 at 2:10 p.m.

Momentos después de que se le retirara el soporte vital, una mujer anónima del Área de la Bahía hizo el más abundante de los regalos: 17 tejidos y órganos diferentes....

FILE - A nursing student administers a Moderna COVID-19 vaccine at a vaccination center at UNLV, in Las Vegas on April 26, 2021. The Food and Drug Administration on Friday, April 29, 2022, set tentative dates in June to publicly review COVID-19 vaccines for the youngest American children, typically the final step before authorizing the shots. (AP Photo/John Locher, File)

El misterio del covid prolongado: ¿las vacunas ayudan o perjudican?

May 10, 2022 at 9:29 a.m.

Tras meses de lucha contra el covid, Ibrahim Rashid, de 25 años, estaba emocionado con la idea de vacunarse para prevenir la reinfección y quizá aliviar sus síntomas. Para su...

Una cama vacía donde un paciente con COVID-19 murió más temprano ese día espera ser ocupada por un nuevo paciente en la UCI del Hospital Hartford en Hartford, Connecticut, el 18 de enero de 2022.

Lo que revelan los minicorazones y otros órganos acerca del covid prolongado

March 14, 2022 at 10:33 a.m.

El ataque del virus COVID-19 al corazón humano queda completamente oculto a la vista, revelado sólo por los daños que permanecen. Pero los científicos en San Francisco han diseñado una...

Los nuevos análisis de sangre innovadores ahora pueden detectar signos ocultos de la enfermedad de Alzheimer, años antes de la aparición de síntomas desgarradores.

La búsqueda de un simple análisis de sangre para detectar el Alzheimer

November 24, 2021 at 10:30 a.m.

Incluso en el mejor momento de nuestras vidas, cuando todavía estamos sanos e inteligentes, nuestros cerebros pueden estar desarrollando en secreto las mortales placas y ovillos de la enfermedad del...

In this Saturday, Nov. 1, 2008 photo, Gen. Colin L. Powell, former U.S. Secretary of State and Chairman of the Joint Chiefs of Staff, greets veterans from Iowa and Illinois during their visit to the World War II Memorial in Washington, as part of the Inaugural Honor Flight of the Quad Cities. Powell died at the age of 84 on Monday, Oct. 18, 2021, from complications from COVID-19, his family said on Facebook.

Colin Powell was vaccinated against COVID-19, but a ‘breakthrough’ infection ended up being deadly

October 19, 2021 at 3:55 p.m.

The tragic death of Gen. Colin Powell from COVID-19 reveals not the failure of vaccines but the inability of his fragile immune system to protect him from those who are...

La enfermera Sandra Lindsay recibe la segunda dosis de la vacuna de Pfizer contra el covid en el Centro Médico Judío de Long Island el 4 de enero de 2021 en el distrito de Queens de la ciudad de Nueva York.

¿Cuándo declararemos la victoria sobre COVID-19?

March 15, 2021 at 10:13 a.m.

Un año después de la pandemia, las tasas de infección están cayendo. Los hospitales son más tranquilos; las morgues están más vacías. Envalentonados por las vacunas, nos estamos quitando las...

THE AMERICAN POLIO EPIDEMIC: WHAT WAS IT? | The nation's first large-scale polio epidemic broke out in New York City in 1916. In total nationwide, 27,000 cases were contracted and 6,000 people died. For the next four decades, local epidemics across the U.S. worsened as the virus struck children and surged in the summer. In about 95% of polio cases, patients were asymptomatic. However, 1% to 2% of people became paralyzed. Some recovered completely while others were paralyzed for life. A record 57,628 polio cases were reported in the U.S. in 1952 alone.

When will we declare victory over COVID-19?

March 15, 2021 at 10:12 a.m.

A year into the pandemic, infection rates are falling. Hospitals are quieter; morgues are emptier. Emboldened by vaccines, we're dropping our masks and stepping closer. Slowly we're reopening indoor dining,...

FIND SPACE WHEREVER YOU CAN | It might feel impossible to find true alone time when you and your family are all under one roof. However, Osequeda recommends finding any space you can, even a closet or the bathroom where you can take a couple of moments to yourself to take a breath or just sit in silence. If you drive and you're coming home from work or running errands, you can also spend an extra few minutes sitting in your car closing your eyes or listening to the radio.

New research: Why Zoom can wipe you out

February 24, 2021 at 10:16 a.m.

COVID-19 pandemic has moved our lives into a virtual space. Why is that so exhausting? The tiredness doesn't feel earned. We're not flying an airplane, teaching toddlers or rescuing people...

Rapid review of new scientific research | A typical, peer-reviewed journal takes at least a few months but often closer to a year to cycle submitted papers all the way to publication—and that's fine for most conditions. In 2020, we've seen scholarly research get a green light and a steady push from reviewers who are almost waiting by the phone. That means faster validation of vaccine experiments, for example, or studies of the efficacy of virus-killing UVC light.

Why COVID-19 vaccines could make us mask-free and huggable

February 22, 2021 at 10:33 a.m.

You're vaccinated. They're not. When visiting, is it safe to toss the tiresome mask? Perhaps. There's growing evidence that vaccines not only save lives, but can stop or greatly slow...

An image from an electron microscope shows SARS-CoV-2, the virus that causes COVID-19.Attorneys who have visited clients at the Orange, Osceola and Seminole county jails say inmates have been given masks that are poorly made or not designed for prolonged use.

Could coronavirus cause a better flu season? Maybe. Here’s why.

September 22, 2020 at 9:24 a.m.

Flu season is approaching, but some medical experts say it's possible this year's may shape up to be milder than initially feared. The unlikely reason? The coronavirus pandemic. As people...

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