By WILLIAM MANSELL and EMILY SHAPIRO, ABC News

(NEW YORK) — A pandemic of the novel coronavirus has now killed more than 715,000 people worldwide.

More than 19.1 million people across the globe have been diagnosed with COVID-19, the disease caused by the new respiratory virus, according to data compiled by the Center for Systems Science and Engineering at Johns Hopkins University. The actual numbers are believed to be much higher due to testing shortages, many unreported cases and suspicions that some national governments are hiding or downplaying the scope of their outbreaks.

The United States is the worst-affected country around the world, with more than 4.8 million diagnosed cases and at least 160,115 deaths.

Here’s how the news is developing Friday. All times Eastern:

9 a.m.: Entire high school football team quarantined in Alabama

The entire football team at Alabama’s Oneonta High School is under quarantine due to coronavirus cases, ABC Birmingham affiliate WBMA-TV reported.

Practice will resume on Aug. 18 and the team’s first game is set for Aug. 21, WBMA reported.

Oneonta High School’s school year has been delayed to start on Aug. 18 after an emergency school board meeting vote on Thursday, the school said.

Classes will have a hybrid in-person/remote learning schedule. Some students have registered for full-time remote learning, the high school said.

7:38 a.m.: CDC says up to 190,000 dead by end of August

The Centers for Disease Control and Prevention updated its COVID-19 death projections, saying the coronavirus death toll could reach 190,000 by the end of August. The government’s ensemble forecast predicts “deaths may decrease,” but another 15,000 to 30,000 more Americans may die from COVID-19 over the next 23 days.

This week’s national ensemble forecast predicts that weekly reports of new COVID-19 deaths may decrease over the next four weeks, with 4,500 to 10,600 new deaths reported during the week ending Aug. 29. Its forecast predicts that 175,000 to 190,000 total COVID-19 deaths will be reported by that date.

State-level forecasts, according to the CDC, predict that the number of reported new deaths per week may increase over the next four weeks in Hawaii and Puerto Rico and may decrease in Florida, Mississippi, New Mexico, the Northern Mariana Islands, Ohio, Texas, Vermont and the Virgin Islands.

The COVID Tracking Project reported that for the first time since early March, the number of people tested for COVID-19 is down. This week’s tests were 9.1% lower than last week’s national peak of 5.7 million tests.

New cases of COVID-19 were also down this week by 10.4% , according to the COVID Tracking Project.

5:20 a.m.: US weekly COVID-19 cases, deaths down

Another day, another grim milestone for the U.S. as the coronavirus pandemic continues across the globe. Overnight, the U.S. surpassed 160,000 deaths, bringing its total to at least 160,104 as of 4:30 a.m., according to Johns Hopkins. The U.S. crossed 150,000 deaths last week.

In good news, however, an internal Federal Emergency Management Agency memo obtained by ABC News shows that the U.S. is slightly coming down from its recent national surge. New cases and deaths in the last week have both decreased in week-over-week comparisons. At least 396,559 new cases were confirmed during the period of July 29 and Aug. 5, which is a 12.6% decrease from the previous seven-day period.

There were 7,348 deaths recorded in the same time frame, marking a 2.4% decrease in new deaths compared with the previous week.

The national test-positivity rate is also going down. In the last seven days, the rate was 7.5%, which is down from 8.6% from the previous week.

Only two states and territories, according to the FEMA memo, are in an upward trajectory of new cases, while eight are at a plateau and 46 states and territories are going down.

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