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Justice Buress, 4, demonstrates how she hides under a table during a drill at Little Explorers Learning Center in St. Louis. Day care director Tess Trice carries out monthly drills to train the children to get on the floor when they hear gunfire.

ST. LOUIS — Champale Greene-Anderson keeps the volume up on her television when she watches 5-year-old granddaughter Amor Robinson while the girl’s mom is at work.

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Aspen was an early COVID-19 hot spot in Colorado, with a cluster of cases in March linked to tourists visiting for its world-famous skiing. Tests were in short supply, making it difficult to know how the virus was spreading.

So in April, when the Pitkin County Public Health Department announced it had obtained 1,000 COVID-19 antibody tests that it would offer residents at no charge, it seemed like an exciting opportunity to evaluate the efforts underway to stop the spread of the virus.

“This test will allow us to get the epidemiological data that we’ve been looking for,” Aspen Ambulance District director Gabe Muething said during an April 9 community meeting held online.

However, the plan soon fell apart amid questions about the reliability of the test from Aytu BioScience. Other ski towns such as Telluride, Colorado, and Jackson, Wyoming, as well as the less wealthy border community of Laredo, Texas, were also drawn to antibody testing to inform decisions about how to exit lockdown. But they, too, determined the tests weren’t living up to their promise.

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From late March into April, Timothy Regan had severe coughing fits several times a day that often left him out of breath. He had a periodic low-grade fever, too.

Wondering if he had COVID-19, Regan called a nurse hotline run by Denver Health, a large public health system in his city. A nurse listened to him describe his symptoms and told him to immediately go to the hospital system’s urgent care facility.

When he arrived at Denver Health — where the emergency room and urgent care facility sit side by side at its main location downtown — a nurse directed him to the ER after he noted chest pain as one of his symptoms.

Regan was seen quickly and given a chest X-ray and electrocardiogram, known as an EKG, to check his lungs and heart. Both were normal. A doctor prescribed an inhaler to help his

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Desde su laboratorio en Montana, Elizabeth Fischer está tratando de ayudar a que las personas vean a qué se enfrentan con COVID-19.

Durante las últimas tres décadas, Fischer, de 58 años, y su equipo en los Rocky Mountain Laboratories, parte del Instituto Nacional de Alergias y Enfermedades Infecciosas de los Institutos Nacionales de Salud (NHI), han capturado y creado algunas de las imágenes más dramáticas de los patógenos más peligrosos del mundo.

“Me gusta obtener imágenes para tratar de transmitir que se trata de una entidad, para desmitificarla, que sea algo más tangible para las personas”, dijo Fischer, una autoridad en el manejo de microscopios electrónicos.

Ahora, con sus representaciones del coronavirus destellando en las pantallas de todo el mundo, Fischer le ha puesto “rostro” al que “muchos llaman el enemigo invisible”.

Fischer trabaja en uno de los 13 laboratorios de “Bioseguridad Nivel 4” de la nación, aquéllos equipados para manejar con seguridad patógenos letales. Junto con su equipo, visualiza las plagas más mortales del mundo, desde el Ébola hasta el VIH, desde la salmonella hasta el SARS-CoV-2, el coronavirus que causa COVID-19.

Las impresionantes imágenes permiten a las personas ver un virus como estructuras biológicas elaboradas con debilidades que

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Tom Peeling wanted his teeth cleaned and wasn’t going to let the coronavirus pandemic get in the way.

Luckily, his six-month regular appointment was scheduled for earlier this month, just days after dental offices were allowed to reopen in Florida for routine services. In late March the state ordered dentists to treat only emergency cases as part of its efforts to keep residents at home and to preserve limited medical supplies, such as N95 masks, that might be needed to treat COVID-19 patients.

Yet for Peeling, 62, of Lantana, Florida, the dental visit was anything but routine. He had his temperature taken upon arrival and was asked to rinse with a hydrogen peroxide solution to reduce germs before the dentist or hygienist looked into his mouth. The dentist and his assistants all wore masks.

Another change: He was the only patient in the office.

Florida is one of 40 states that have allowed dental offices to resume providing routine services following the March shutdown of nonessential businesses in much of the

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