Diagnostic tests

In this image from video provided by Washington University, researcher Nicolas Barthelemy works on a p-tau217 test for Alzheimer's disease at a laboratory in St. Louis, Mo., on Monday, July 27, 2020. Several companies and universities have developed versions of these tests, which look for a form of tau protein, one of the substances that can build up and damage the brains of people with Alzheimer’s. (Huy Mach/University of Washington via AP)
July 28, 2020 - 1:11 pm
An experimental blood test was highly accurate at distinguishing people with Alzheimer’s disease from those without it in several studies, boosting hopes that there soon may be a simple way to help diagnose this most common form of dementia. Developing such a test has been a long-sought goal, and...
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Health workers arrive to administer a free medical checkup in a slum in Mumbai, India, Sunday, June 28, 2020. India is the fourth hardest-hit country by the COVID-19 pandemic in the world after the U.S., Russia and Brazil. (AP Photo/Rafiq Maqbool)
June 29, 2020 - 3:37 am
NEW DELHI (AP) — India has reported a new daily record of nearly 20,000 new infections as several Indian states reimpose partial or full lockdowns to stem the spread of the coronavirus. India’s health ministry has recorded 548,318 COVID-19 total cases as of Monday, a jump of nearly 100,000 cases in...
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Workers collect and stack the coffins of people that have been recently cremated amid the new coronavirus pandemic, at the La Recoleta cemetery in Santiago, Chile, Sunday, June 28, 2020. The coffins are collected, destroyed, and processed by a company specialized in organic waste. (AP Photo/Esteban Felix)
June 28, 2020 - 10:32 pm
MANILA, Philippines — Philippine officials say authorities in a central village may face criminal or administrative complaints for allowing a street parade and dance amid a strict coronavirus lockdown. Mayor Edgar Labella of Cebu city said officials of Basak village have been ordered to explain why...
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Residents wearing masks to curb the spread of the coronavirus wait at a traffic junction in Beijing on Wednesday, June 17, 2020. China’s capital reported a slight increase in the numbers confirmed new coronavirus cases Wednesday as it seeks to battle the recent outbreak with strict measures aimed at reducing human contact and the chances of a new wave of infections across the country. (AP Photo/Ng Han Guan)
June 17, 2020 - 9:20 pm
BEIJING — China’s capital has reported a decline in newly confirmed coronavirus cases as the city continues to press stricter measures to contain a new outbreak. Beijing reported 21 cases Thursday, down from 31 a day earlier. Officials reported 28 new cases in all nationwide. Of the cases outside...
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FILE - In this Wednesday, May 20, 2020 file photo, a health worker takes a blood sample for a COVID-19 antibody test in Los Angeles. An antibody test might show if you had COVID-19 in the recent past, which most experts think gives people some protection from the virus. (AP Photo/Damian Dovarganes)
May 21, 2020 - 7:59 pm
WASHINGTON (AP) — U.S. regulators are moving ahead with a crackdown on scores of antibody tests for the coronavirus that have not yet been shown to work. The Food and Drug Administration on Thursday published a list of more than two dozen test makers that have failed to file applications to remain...
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Jason Antos, an Advanced EMT for Rescue Inc., puts a COVID-19 testing swab up the nasal passage of Anya Wolfe, of Wardsboro, Vt., during a pop-up COVID-19 testing clinic at the Brattleboro Union High School's parking lot in Brattleboro, Vt., Thursday, May 14, 2020. The clinics are part of the state's efforts to ramp up testing and prevent the spread of COVID-19. (Kristopher Radder/The Brattleboro Reformer via AP)
May 14, 2020 - 10:26 pm
SILVER SPRING, Md. (AP) — From a hospital on the edge of the Navajo Nation to the suburbs of the nation’s capital, front-line medical workers in coronavirus hot spots are struggling to keep up with a crushing load of patients while lockdown restrictions are lifting in many other parts of the U.S...
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FILE - This file image provided by The National Institute of Allergy and Infectious Diseases (NIAID) shows SARS-CoV-2 (orange) the virus that causes COVID-19—isolated from a patient in the U.S., emerging from the surface of cells (green) cultured in the lab. A new type of coronavirus test offers a cheaper, quicker way to screen for infections, moving the U.S. toward the kind of mass screening that experts say is essential to returning millions of Americans to school and work. But the first so-called antigen test _ announced Saturday, may 9, 2020 by the Food and Drug Administration _ is not quite the kind sought by top government health officials. It is less accurate than the current gold standard for testing and can only be run on specialized equipment. (NIAID-RML via AP)
May 12, 2020 - 4:29 pm
WASHINGTON (AP) — A new type of coronavirus test offers a cheaper, quicker way to screen for infections, moving the U.S. toward the kind of mass screening that experts say is essential to returning millions of Americans to school and work. But the first so-called antigen test — announced Saturday...
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FILE - In this May 10, 2020, file photo, notices of the Seoul city emergency administrative order to prohibit gathering are posted at the entrance of a temporary closed dance club in Seoul, South Korea. The sign reads: "The Seoul city emergency administrative order to prohibit gathering." As South Korea grapples with a new spike in coronavirus infections thought to be linked to nightspots in Seoul, including several popular with gay men, it's also seeing rising homophobia that's making it difficult for sexual minorities to come forward for diagnostic tests. (AP Photo/Ahn Young-joon, File)
May 12, 2020 - 4:52 am
SEOUL, South Korea (AP) — As South Korea grapples with a new spike in coronavirus infections thought to be linked to nightspots in Seoul, including several popular with gay men, it's also seeing rising homophobia that's making it difficult for sexual minorities to come forward for diagnostic tests...
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FILE - In this April 28, 2015 file photo, a patient has her blood drawn for a liquid biopsy at a hospital in Philadelphia. According to results released on Tuesday, April 28, 2020, for the first time, a blood test has been shown to help detect many types of cancer in a study of thousands of women with no symptoms of the disease. The test is still experimental and even its fans say it needs to be improved. (AP Photo/Jacqueline Larma)
April 28, 2020 - 1:43 pm
For the first time, a blood test has been shown to help detect many types of cancer in a study of thousands of people with no history or symptoms of the disease. The test is still experimental. Even its fans say it needs to be improved and that Tuesday’s results are not ideal. Yet they show what...
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Taiwan McCall, left, useless a nasal swab to test James Reese for COVID-19 in the Harlem section of New York, Monday, April 20, 2020. While many laboratories and companies are now offering tests, there are still only two main types available. The nasal swab test tells you if you have an active viral infection right now. A separate blood test tells you if you were previously exposed to the virus and fought off the infection. (AP Photo/Seth Wenig)
April 20, 2020 - 8:07 pm
WASHINGTON (AP) — Testing is critical to controlling the coronavirus and eventually easing restrictions that have halted daily life for most Americans. But there's been confusion about what kinds of tests are available and what they actually measure. There are still just two main types in the U.S...
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