ATLANTA (CNN) – As US leaders work to control the spread of coronavirus, researchers across the globe are working to solve the mysteries that still surround infections.
One of the mysteries is: why the experience can be so different from person to person. One expert says the answer may have to do with looking at past vaccines that individuals have ever used.
“When we looked at the background of COVID, we found that people who have previously been vaccinated with a variety of vaccines – for pneumococcal, flu, hepatitis and other illnesses – seem to have the risk of getting COVID is lower, “Dr. Andrew Badley, an infectious disease specialist at the Mayo Clinic, told CNN̵7;s Anderson Cooper on Monday evening.
“That’s what immunologists call immune training: the way your immune system produces an effective response to infection,” says Badley.
“A good analogy is to take your immune system to a muscle,” he said. “The more you exercise that muscle, the stronger it will be when you need it.”
There is no solid evidence of any other immunomodulating vaccine against COVID-19. But some researchers have suggested that it is possible.
In June, a team of researchers in the US recommended booster doses of the measles, mumps and rubella (MMR) vaccine for everyone to see if it helps prevent the most serious effects of the infection. coronavirus or not. And last month, researchers found that countries where more people were vaccinated against the Bacillus Calmette-Guerin (BCG) tuberculosis vaccine (BCG) had fewer coronavirus deaths, a finding consistent with the Other research shows that this vaccine can boost people’s immunity in general.
But once you get infected, the amount of virus that gets into your body could also affect your experience, another expert told CNN Monday.
Dr. Monica Gandhi, an infectious disease specialist at the University of California, San Francisco, has been working with a team of researchers to understand how many people can overcome their infection with dark symptoms. minimal or no. According to an estimate last month by the US Centers for Disease Control and Prevention, about 40% of people infected with the virus have no symptoms.
Gandhi’s team found masks make a difference.
“What the mask really does is reduce the amount of virus you get in, if you get infected,” she said. “And by reducing that … you have a lower dose, you can control it, you can have a calm response and you have mild symptoms or no symptoms at all.”
‘We have nothing to celebrate’ about the current level of the case, the doctor said
So far, more than 5 million Americans have tested positive for the virus and at least 164,000 have died, according to data from Johns Hopkins University.
The average daily number of new cases in the US is more than 54,000, down from more than 65,000 cases per day in mid to late July.
However, the average daily number of deaths from COVID-19 has fluctuated above 1,000 for more than two weeks. The country was below that level for seven consecutive weeks before.
“We have nothing to celebrate (just) because we are going to have 50,000 cases a day. We have a huge amount of illness and death at our feet right now and in the coming weeks,” Tien Dr. Rochelle Walensky, head of infectious diseases at Massachusetts General Hospital, said Tuesday.
“Even at 18,000 shifts per day (like the US) in mid-May, we can’t really fix this,” Walensky said.
Research: Many Americans are not infected by remote commands
According to a recently published modeling study, up to 80% of Americans would be infected with COVID-19 if the states did not implement physical policies.
Researchers from Harvard University and University College London found that each state in the US adopted at least one measure of physical distance regulation in March to slow the spread of the pandemic.
The policies have helped reduce more than 600,000 cases in just three weeks, according to research published Tuesday in the journal PLOS.
“The results show that the timing of government-issued orders is strongly correlated with the reduction in cases and deaths. In short, these measures are effective and policymakers should use them. They act as an arrow in their fight to stop the local epidemic where they are not responding to containment measures, “said Dr. Mark J. Siedner, co-author of the study from Harvard Medical School and said the doctor of infectious diseases at Massachusetts General Hospital.
Research shows a 2% reduction in mortality per day starting a week after the physical balance policy begins.
Cases spike in nursing homes due to the spread of the community, the group said
A medical organization said the number of COVID-19 infections increased rapidly in US nursing homes in July after falling steadily in June – signaling a serious risk for a particularly vulnerable group. traders, a medical organization said on Tuesday.
The American Health Care Association and the National Center for Living Support say the increase in nursing home cases is due to the skyrocketing total number of cases in the general population and will spur the US government. Take steps to protect the house.
Mark Parkinson, CEO of AHCA / NCAL, wrote to CNN on Tuesday: “We need public health officials to focus on reducing contagion in the larger community and prioritizing care. long-term resources ”, including personal protective equipment, testing and employee support.
The team reported that the number of new weekly COVID-19 cases in nursing homes fell from 9,072 at the end of May to 5,468 on June 21 – but then increased to 8,628 in the week of July 19, the last week that Data is available, the team said. The team cited data collected by the Centers for Medicare & Medicaid Services.
This, the report said, confirmed the group’s concerns: Cases will rise in nursing homes as they spike in the wider community across the country from June to July.
The CDC says that older adults and those with certain underlying medical conditions increase the risk of serious illness.
The-CNN-Wire ™ & © 2020 Cable News Network, Inc., a Time Warner Company. All Rights Reserved.
But related story
Other stories you may be interested in