Health
Experts question, criticize new CDC guidance to shorten COVID-19 isolation – Global News
U.S. health officials’ decision to shorten the recommended COVID-19 isolation and quarantine period from 10 days to five is drawing criticism from some medical experts and could create confusion among many Americans.
To the dismay of some authorities, the new guidelines allow people to leave isolation without getting tested to see if they are still infectious.
The guidance has raised questions about how it was crafted and why it was changed now, in the middle of another wintertime spike in cases, this one driven largely by the highly contagious omicron variant.
Monday’s action by the Centers for Disease Control and Prevention cut in half the recommended isolation time for Americans who are infected with the coronavirus but have no symptoms. The CDC similarly shortened the amount of time people who have come into close contact with an infected person need to quarantine.
The CDC has been under pressure from the public and the private sector, including the airline industry, to shorten the isolation time and reduce the risk of severe staffing shortages amid the omicron surge. Thousands of flights have been canceled over the past few days in a mess blamed on omicron.
“Not all of those cases are going to be severe. In fact, many are going to be asymptomatic,” CDC Director Dr. Rochelle Walensky said Monday. “We want to make sure there is a mechanism by which we can safely continue to keep society functioning while following the science.”
CDC officials said the guidance is in keeping with growing evidence that people with the virus are most infectious in the first few days.
Louis Mansky, director of the Institute for Molecular Virology at the University of Minnesota, agreed there is a scientific basis to the CDC’s recommendations.
“When somebody gets infected, when are they most likely to transmit the virus to another person?” he said. “It’s usually in the earlier course of the illness, which is typically a day or two before they actually develop symptoms and then a couple of days to three days after that.”
Research, including a study published in the journal JAMA Internal Medicine in August, backs that up, though medical experts cautioned that nearly all of the data predates omicron.
The CDC released a report Tuesday on a cluster of six omicron cases in a Nebraska household and found the median incubation period — the time between exposure and the appearance of symptoms — was about three days, versus the five days or more documented earlier in the pandemic. The six people also experienced relatively mild illness.
But other experts questioned why the guidelines let people leave isolation without testing.
“It’s frankly reckless to proceed like this,” said Dr. Eric Topol, founder and director of the Scripps Research Translational Institute. “Using a rapid test or some type of test to validate that the person isn’t infectious is vital.”
“There’s no evidence, no data to support this,” he added.
Mansky said CDC probably didn’t include exit testing in its guidelines for logistical reasons: There is a run on COVID-19 rapid tests amid the spike in cases and the busy holiday travel season. In many places, at-home tests are difficult or impossible to find.
The CDC is “driven by the science, but they also have to be cognizant of the fact of, you know, what are they going to tell the public that they’ll do,” Mansky said. “That would undermine CDC if they had guidance that everybody was ignoring.”
Qamara Edwards, director of business and events for Sojourn Philly, which owns four restaurants in Philadelphia, said about 15 per cent of its employees are out sick with COVID-19, and staffing is tight.
The CDC changes are “great for businesses, they do allow people to return to work sooner than they’ve expected,” Edwards said, though she understands why workers might be resistant and worried about their safety.
In Los Angeles, King Holder, who runs the StretchLab Beverly fitness business, likewise said omicron has caused “ample disruption” to his company, and he welcomed the more relaxed guidelines.
“The possibility of five days compared to 10-14 days is huge for our business and allows us to stay afloat,” he said.
But Dana Martin, a 38-year-old Philadelphia teacher and educational consultant, said: “The looser COVID guidelines make me nervous. I’m more hesitant to participate in holiday activities because of the omicron variant and the seemingly more lax protocols.”
Marshall Hatch, senior pastor of New Mount Pilgrim Church on Chicago’s West Side, said he is bracing for some confusion in his congregation. The church has been a strong advocate for testing, vaccinations and booster shots.
Hatch said the CDC’s latest guidance is confusing and “a little incongruous.”
“Either we’re in a surge that we need to take very seriously or are we winding down the pandemic and that’s why we’re shortening the isolation and quarantine times,” he said Tuesday. “They might want to give us a little more information to go with.”
Hatch said some members of the largely Black congregation, particularly senior citizens, are skeptical of information from government.
The CDC move follows global efforts to adjust isolation rules, with policies differing from country to country.
England last week trimmed its self-isolation period for vaccinated people who have tested positive for COVID-19 to seven days in many cases, provided two negative lateral flow tests are taken a day apart.
The French government said Monday that it will soon relax its isolation rules, although by exactly how much isn’t yet clear.
Health Minister Olivier Veran said the rule changes will be aimed at warding off “paralysis” of public and private services. By some estimates, France could be registering more than 250,000 new infections per day by January.
Italy, meanwhile, is considering doing away with a quarantine altogether for those who have had close contact with an infected person as long they have had a booster shot. Projections indicate as many as 2 million Italians could be put in quarantine over the next two weeks as the virus spreads.
The U.S. airline industry applauded the CDC move.
“The decision is the right one based upon science,” said the lobbying group Airlines for America.
But the head of a flight attendants union criticized the change, saying it could lead businesses to pressure sick employees to come back before they are well.
If that happens, “we will make clear it is an unsafe work environment, which will cause a much greater disruption than any `staffing shortages,”’ warned Sara Nelson, president of the Association of Flight Attendants-CWA International.
© 2021 The Canadian Press
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Interior Health says it delivered nearly 800,000 immunization doses last year — a number almost equal to the region’s population.
The released figure of 784,980 comes during National Immunization Awareness Week, which runs April 22-30.
The health care organization, which serves a large area of around 820,000, says it’s using the occasion to boost vaccine rates even though there may be post-pandemic vaccine fatigue.
“This is a very important initiative because it ensures that communicable diseases stay away from a region,” said Dr. Silvina Mema of Interior Health.
However, not all those doses were for COVID; the tally includes childhood immunizations plus immunizations for adults.
But IHA said immunizations are down from the height of the pandemic, when COVID vaccines were rolled out, though it seems to be on par with previous pre-pandemic years.
Interior Health says it’d like to see the overall immunization rate rise.
“Certainly there are some folks who have decided a vaccine is not for them. And they have their reasons,” said Jonathan Spence, manager of communicable disease prevention and control at Interior Health.
“I think there’s a lot of people who are hesitant, but that’s just simply because they have questions.
“And that’s actually part of what we’re celebrating this week is those public health nurses, those pharmacists, who can answer questions and answer questions with really good information around immunization.”
Mima echoed that sentiment.
“We take immunization very seriously. It’s a science-based program that has saved countless lives across the world and eliminated diseases that were before a threat and now we don’t see them anymore,” she said.
“So immunization is very important.”
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The U.S. Food and Drug Administration said Tuesday that samples of pasteurized milk had tested positive for remnants of the bird flu virus that has infected dairy cows.
The agency stressed that the material is inactivated and that the findings “do not represent actual virus that may be a risk to consumers.” Officials added that they’re continuing to study the issue.
“To date, we have seen nothing that would change our assessment that the commercial milk supply is safe,” the FDA said in a statement.
The announcement comes nearly a month after an avian influenza virus that has sickened millions of wild and commercial birds in recent years was detected in dairy cows in at least eight states. The Agriculture Department says 33 herds have been affected to date.
FDA officials didn’t indicate how many samples they tested or where they were obtained. The agency has been evaluating milk during processing and from grocery stores, officials said. Results of additional tests are expected in “the next few days to weeks.”
The PCR lab test the FDA used would have detected viral genetic material even after live virus was killed by pasteurization, or heat treatment, said Lee-Ann Jaykus, an emeritus food microbiologist and virologist at North Carolina State University
“There is no evidence to date that this is infectious virus and the FDA is following up on that,” Jaykus said.
Officials with the FDA and the USDA had previously said milk from affected cattle did not enter the commercial supply. Milk from sick animals is supposed to be diverted and destroyed. Federal regulations require milk that enters interstate commerce to be pasteurized.
Because the detection of the bird flu virus known as Type A H5N1 in dairy cattle is new and the situation is evolving, no studies on the effects of pasteurization on the virus have been completed, FDA officials said. But past research shows that pasteurization is “very likely” to inactivate heat-sensitive viruses like H5N1, the agency added.
Matt Herrick, a spokesman for the International Dairy Foods Association, said that time and temperature regulations for pasteurization ensure that the commercial U.S. milk supply is safe. Remnants of the virus “have zero impact on human health,” he wrote in an email.
Scientists confirmed the H5N1 virus in dairy cows in March after weeks of reports that cows in Texas were suffering from a mysterious malady. The cows were lethargic and saw a dramatic reduction in milk production. Although the H5N1 virus is lethal to commercial poultry, most infected cattle seem to recover within two weeks, experts said.
To date, two people in U.S. have been infected with bird flu. A Texas dairy worker who was in close contact with an infected cow recently developed a mild eye infection and has recovered. In 2022, a prison inmate in a work program caught it while killing infected birds at a Colorado poultry farm. His only symptom was fatigue, and he recovered.
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The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Science and Educational Media Group. The AP is solely responsible for all content.
Canada is about where it should be when it comes to childhood vaccines, but for adult vaccinations it’s a different story.
Dr. Vivien Brown of Immunize Canada says the overall population should have rates of between 80 and 90 per cent for most vaccines, but that is not the case.
She says most children are in that range but not for adult vaccines and ultimately the most at-risk populations are not being reached.
She says the population is under immunized for conditions such as pneumonia, shingles, tetanus, and pertussis.
Brown wants people to talk with their family physician or pharmacist to see if they are up-to-date on vaccines, and to get caught up because many are “killer diseases.”
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