Coronavirus updates: Barron Trump also tested positive for COVID, Melania says
Melania Trump said she and her son have now tested negative.
A pandemic of the novel coronavirus has now killed more than 1 million people worldwide.
Over 38.4 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 criteria for diagnosis -- through clinical means or a lab test -- has varied from country-to-country. Still, 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.
Since the first cases were detected in China in December, the virus has rapidly spread to every continent except Antarctica.
The United States is the worst-affected country, with more than 7.9 million diagnosed cases and at least 216,639 deaths.
California has the most cases of any U.S. state, with more than 865,000 people diagnosed, according to Johns Hopkins data. California is followed by Texas and Florida, with over 830,000 cases and over 741,000 cases, respectively.
More than 190 vaccine candidates for COVID-19 are being tracked by the World Health Organization, at least 10 of which are in crucial phase three studies. Of those 10 potential vaccines in late-stage trials, there are currently five that will be available in the United States if approved.
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'Herd immunity' is not the answer for solving the pandemic, officials say
Promoting the concept of "herd immunity" or "community immunity," a form of indirect protection from infectious disease that occurs when a certain percentage of a population has become immune, is "inappropriate, irresponsible and ill-informed," Thomas M. File Jr., president of the Infectious Diseases Society of America, announced in a statement Wednesday.
While the concept is the goal of vaccination campaigns, it "should never come at the cost of the planned exposure and infection of millions of additional people," File said.
ABC News' Eric Strauss contributed to this report.
Russia prepares to test 2nd COVID-19 vaccine on 40,000 volunteers
Russia has registered a second COVID-19 vaccine and is preparing to test it on 40,000 volunteers, according to Russian officials.
The vaccine, called "EpiVakKorona," was produced by the 'Vector' State Research Center of Virology and Biotechnology in Novosibirsk, a top state lab that since Soviet times has also been a key biological warfare center.
Unlike the first vaccine, Sputnik V, the new vaccine is not based on a modified adenovirus but instead is a "peptide" type vaccine that uses artificially synthesized fragments of the coronavirus itself to produce an immune response. It is administered in two doses, 21 days apart, according to Russian news agency TASS.
Caution must be used when giving it to patients suffering from chronic kidney and liver illnesses, as well as epilepsy and heart illnesses, TASS reported.
So far the vaccine has been tested on about 100 people, but it has not yet passed key clinical trials. The vaccine will now undergo, in effect, a phase 3 trial.
Sputnik V could be widely distributed in Russia by late October or early November, head of the Russian Direct Investment Fund Kirill Dmitriev announced on Monday, according to TASS.
A third Russian vaccine is also on the way -- produced by the M.P. Chumakov Federal Scientific Center for Research and Development of Immuno-biological Drugs, Russian President Vladimir Putin announced Wednesday. A phase 3 trial for that vaccine will begin Monday.
ABC News’ Patrick Reevell contributed to this report.
Funding to be withheld for New York schools in 'red zones'
New York Gov. Andrew Cuomo will withhold funding from schools in "red zones" that remain open –- both public and private –- until matters are resolve to the states liking, Cuomo announced during a conference call Wednesday.
Just over 1,200 people tested positive and seven people died in the state on Tuesday, Cuomo said. The test positivity rate in the "red zone" areas is 6.2%, while the statewide positivity rate excluding Red Zones is .95%.
ABC News’ J. Gabriel Ware contributed to this report.
Trump seeking emergency approval for Regeneron
President Donald Trump is working to get emergency approval for Regeneron, the antibody treatment that he himself received after contracting COVID-19.
The treatment made him "feel very good very fast," he told reporters from the Rose Garden of the White House on Wednesday morning.
"They call it a therapeutic, but I don't think it was therapeutic," Trump said. "I think it was a cure. For me, it was something that was very good. Who knows, maybe it would have happened anyway, maybe I would have recovered beautifully anyway. All I know is once I had Regeneron it worked out very well."
New cases in US rise by double digits in week-over-week comparisons
The number of new COVID-19 cases recorded in the United States increased by double digits in week-over-week comparisons, while the number of new deaths from the disease continued to tick downward slightly, according to an internal memo from the U.S. Department of Health and Human Services that was obtained by ABC News on Tuesday night.
The memo, which is circulated to the highest levels of the federal government and is used to determine daily priorities for the agencies working on COVID-19 response, said 34 U.S. states and territories are in an upward trajectory of new infections, while 10 jurisdictions are at a plateau and 12 others are in a downward trend.
There were 351,270 new cases confirmed during the period of Oct. 6-Oct. 12, a 14.4% increase from the previous week. There were also 4,886 fatalities from COVID-19 recorded during the same period, a 1.5% decrease compared with the week prior. The national positivity rate for COVID-19 tests increased from 4.7% to 6.1% in week-to-week comparisons, according to the memo.
Meanwhile, 22% of hospitals nationwide have more than 80% of beds full in their intensive care units. That figure was 17-18% during the summertime peak, the memo said.
California's Sonoma County saw a 129.7% relative increase in new cases of COVID-19 between Sept. 29 and Oct. 6. The county confirmed 62 cases on Oct. 7 linked to outbreaks at schools and childcare facilities, according to the memo.
Kentucky reported on Oct. 7 its highest number of COVID-19 patients in ICUs since May. As of Oct. 6, the state's seven-day average for ICU bed occupancy was 80.6%, with 43.7% of adult ICU beds occupied by COVID-19 patients, the memo said.
Montana hit a peak of 504 new COVID-19 cases confirmed on Oct. 6. Daily hospital admissions in the state have increased from 40 in mid-September to more than 60 per day, with greater than 80 on Oct. 5 and Oct. 6. Montana's seven-day hospitalization rate continues to rise from 15.7 per 100,000 population on sept. 29 to a four-month high of 20 per 100,000 population on Oct. 6. Local officials report that hospitals are closed to or at capacity and have started redirecting patients, according to the memo.
New Jersey's seven-day COVID-19 case rate increased 20.6% to 539.5 cases per 1 million population between Sept. 29 and Oct. 6. The state has 71.7% of inpatient hospital beds occupied, with 56.4% of ICU beds full. At least 100 schools in New Jersey have teachers or students who have tested positive for COVID-19, the memo said.
New York recorded on Oct. 6 its highest number of total hospitalizations since July 22. The state has 79.5% of inpatient hospital beds occupied, with 62.4% of ICU beds full.
Utah reported more than 1,000 COVID-19 cases per day for six of the seven days last week. At the same time, week-to-week testing in the state has decreased slightly by 1.2%. Utah's positivity rate for COVID-19 tests, however, has remained stable at 14%.
ABC News' Josh Margolin contributed to this report.