(CNN) The Centers for Disease Control and Prevention doubled down against rumors -- spread mostly on social media -- suggesting that coronavirus deaths have been greatly exaggerated.
People are misinterpreting standard death certificate language, CDC's top expert on mortality said. President Trump has retweeted social media conspiracy theories saying that only a small percentage of the people reported to have died from coronavirus really did die from the virus. They have pointed to death certificates that list other underlying causes.
But that doesn't mean the patients did not die from coronavirus, Bob Anderson, chief of mortality statistics at the CDC, said in a statement.
"In 94% of deaths with COVID-19, other conditions are listed in addition to COVID-19. These causes may include chronic conditions like diabetes or hypertension," Anderson said in the statement, provided to CNN by CDC. "In 6% of the death certificates that list Covid-19, only one cause or condition is listed," the statement added.
"The underlying cause of death is the condition that began the chain of events that ultimately led to the person's death. In 92% of all deaths that mention Covid-19, Covid-19 is listed as the underlying cause of death."
Other top health officials, including National Institute of Allergy and Infectious Diseases Director Dr. Anthony Fauci, have said that CDC mortality statistics are accurate, and have explained that just because a death certificate lists other conditions, it doesn't mean one of those conditions caused a death.
What the other conditions do tell doctors, Anderson said, is that people who have chronic conditions are more likely to suffer severe disease and to die from coronavirus.
Death certificates may also include acute conditions caused by the viral infection, such as pneumonia or respiratory failure.
According to Johns Hopkins University, which uses independent data for its reporting on coronavirus cases and deaths, there have been more than 185,000 deaths from Covid-19 as of late Wednesday afternoon.
CDC data shows that, as of August 22, 161,392 death certificates listed coronavirus as a cause of death.
City and state health officials should prepare to distribute a vaccine as soon as late October, planning documents from the CDC say.
The scenarios offer details about distribution plans for two Covid-19 vaccines when supplies might be limited.
The documents say priority should go to people including health care professionals, essential workers, long-term care facility residents, and staff and national security populations.
The documents, which do not necessarily mean a vaccine will be available by late October, were first posted by the New York Times and confirmed by CNN on Wednesday.
New Covid-19 hot spots keep popping up across the US, with worrying trends in the Midwest and at colleges nationwide.
More than 25,000 cases of Covid-19 have been reported from colleges and universities in 37 states, according to a CNN tally through Wednesday.
But it's not just college students getting more infections. The number of new cases among children has jumped 17% in two weeks, according to the American Academy of Pediatrics and the Children's Hospital Association.
While Covid-19 deaths are rare among children and young adults, many young people are suffering long-term effects from the disease. And even those without symptoms can easily spread coronavirus to others.
That's why colleges and universities shouldn't send infected students home, said Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases.
"Keep them at the university in a place that's sequestered enough from the other students. But don't have them go home, because they could be spreading it in their home state," Fauci told NBC's "Today" show in an interview aired Wednesday.
Campuses shouldn't shut down after an outbreak because it would scatter and spread the virus further, Fauci said. "It's the worst thing you could do," he said.
From the beginning of this pandemic through August 27, more than 476,000 children have been infected, according to the report from the AAP and the hospitals group.
Children at that time represented 9.5% of all coronavirus cases, up from 9.3% a week earlier, the report said.
And from August 13 through August 27, 70,330 new child cases were reported, it said. That's a 17% increase in child cases over two weeks.
Nationwide, more than 6 million people in the US have been infected with the coronavirus, and more than 184,000 have died, according to data from Johns Hopkins University.
No Midwestern state has seen a drop in new cases this past week compared with the previous week, according to data Wednesday morning from Johns Hopkins University.
Iowa and South Dakota are two of the six states across the country that have seen at least a 50% increase in new cases this past week.
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In Iowa, "the uptick in people is from a younger cohort of people," said Dr. Ravi Vemuri, an infectious disease specialist at MercyOne medical center.
Iowa State University, in Ames, reversed its decision to allow some fans to attend its home football game a week from Saturday.
Director of athletics Jamie Pollard says school president Dr. Wendy Wintersteen made the decision after "weighing feedback she has received from the community." The school still plans to have fans at other games.
One of the other major universities in the state is the University of Iowa, a member of the Big Ten, which has postponed football until next year.
Iowa City Mayor Bruce Teague said the return of students at that school helped fuel spread of the virus.
"We have a 30% positivity rate just within a 24-hour period," Teague told CNN. "So we have some major concerns that we must address. We've got to get a little bit ahead of the game because we're definitely looking in the rearview mirror and trying to catch up. And our efforts are not totally where they need to be."
Teague issued a face-mask mandate for Iowa City back in July, but the state has not followed suit -- despite a dire report from the White House coronavirus task force.
The report, dated Sunday, said Iowa is in the "red zone" with the highest rate of cases in the US, which increased 77.4% from the previous week. It also said Iowa had the fifth-highest test positivity rate in the country.
The task force called for a mask mandate, the closure of bars and a plan from universities as the pandemic intensifies in the Midwest.
The White House task force releases state-by-state reports each week to governors' offices, but has declined to make them publicly available. CNN obtained the Iowa record, first reported by the Des Moines Register, from the state Department of Public Health.
Iowa Gov. Kim Reynolds suggested a state mask mandate is not necessary, despite increasing Covid-19 numbers.
"In two weeks, Johnson County went from 9.1% positivity rate to almost 30% positivity rate," Reynolds told reporters Wednesday. She said new cases among young adults ages 18 to 40 went from 59% to 91%.
Reynolds said she has worked to increase personal protective equipment and provide more testing resources to colleges.
"We're going to monitor through this next week, and we're going to see if the mitigation efforts that we've applied starts to reduce those numbers," she said. "And if they don't, then we'll take additional steps."
The National Institutes of Health announced a $129.3 million initiative Wednesday to boost the manufacturing of rapid tests and widen the network of labs. The NIH said this should significantly increase the number of tests by millions per week.
The contracts go to nine companies as part of the Rapid Acceleration of Diagnostics (RADx) program. The goal is to speed up turnaround times for test results in places that have suffered backlogs.
An insufficient number of tests -- combined with dayslong waits to get results -- has been a major roadblock to controlling Covid-19 in the US, health experts have said. But this month, $5 rapid tests will be distributed to states, said Adm. Brett Giroir, the head of US Covid-19 testing efforts.
The nasal swab antigen test does not require an instrument to read it and comes with a free smartphone app so the health care provider can record the test results and automatically send it to public health systems.
Giroir said 48 million tests a month will be available to the US.
Testing availability and speed has improved in the US, particularly since the disastrous spring delays. Giroir said 91.9% of results from major referral labs -- which perform about half the tests in the US -- were completed within three days. The mean turnaround time in August for large referral labs was 2.27 days.
But that 2.27-day average wait time means people can infect others unknowingly -- especially if they're asymptomatic or pre-symptomatic. Public health officials and lab industry experts have repeatedly asked the federal government to take a stronger leadership role in coordinating testing supplies.