Focused crawls are collections of frequently-updated webcrawl data from narrow (as opposed to broad or wide) web crawls, often focused on a single domain or subdomain.
A provocative study suggests that certain colds may leave antibodies against the new coronavirus, perhaps explaining why children are more protected than adults.
People with intellectual disabilities and developmental disorders are three times more likely to die of Covid-19, compared with patients without the conditions, a new analysis found.
Research using cellphone data in 10 U.S. cities last spring could help influence officials’ decisions on new restrictions as cases resurge around the country.
The test detects the response of T cells to the virus — an arm of the immune system that may be just as important as antibodies to preventing reinfection.
By Apoorva Mandavilli
PhotoCreditAdriana Zehbrauskas for The New York Times
Pfizer announced positive early results from its coronavirus vaccine trial, cementing the lead in a frenzied global race that has unfolded at record-breaking speed.
Researchers ended a clinical trial of the drug early because the results were so convincing. The more effective drug would be given in six injections a year instead of as 365 daily pills.
After nearly one in five residents who were tested over three days last week were found to have the coronavirus, Newark announced a set of strict new rules.
President Cyril Ramaphosa of South Africa announced Wednesday that the country will open its borders to all international travelers despite an increasing number of coronavirus cases in some parts of the country.
Senator Thom Tillis defeated Cal Cunningham after an expensive and hard-fought race, which was scrambled in the final weeks by revelations that Mr. Cunningham had an extramarital affair.
