Healthcare staff sporting respirators 40% much less prone to contract COVID
A research of greater than 2,900 healthcare staff (HCWs) reveals that those that wore a respirator have been greater than 40% much less prone to be contaminated with COVID-19 than these sporting a surgical masks.
Within the research, printed yesterday in JAMA Community Open, researchers evaluated SARS-CoV-2 an infection charges and cumulative COVID-19 affected person exposures amongst 2,919 HCWs at seven healthcare networks in Switzerland from September 2020 to September 2021, earlier than the Omicron variant turned widespread.
On the finish of the research, the crew requested individuals whether or not they had worn FFP2 respirators (just like N95 respirators in america) or surgical masks throughout contact with COVID-19 sufferers aside from throughout aerosol-generating procedures. To quantify cumulative affected person exposures, the researchers multiplied the self-reported variety of contacts with COVID-19 sufferers by common contact length.
Of the two,919 HCWs, 749 (26%) examined optimistic for COVID-19. Amongst individuals with affected person publicity, take a look at positivity was 21% for these sporting a respirator, in contrast with 35% in these utilizing surgical masks or a mixture of masks (odds ratio [OR], 0.49).
Danger components for COVID-19 an infection included an contaminated family member (OR, 7.79) and publicity to sufferers (OR, 1.20 per class of cumulative contact), whereas respirator use (OR, 0.56) and vaccination (OR, 0.55) have been protecting.
“SARS-CoV-2 positivity in HCWs was related to cumulative COVID-19 affected person publicity,” the researchers wrote. “The chances of being SARS-CoV-2–optimistic have been lowered by greater than 40% in people utilizing respirators regardless of cumulative publicity, even after adjusting for a number of work- and nonwork-related covariables.”
The authors stated that the information recommend a dose-response relationship between publicity to COVID-19 sufferers and the danger of an infection. “Consequent use of respirators and SARS-CoV-2 vaccination would possibly considerably lower the work-related threat for HCWs uncovered to sufferers with COVID-19,” they wrote. “Whether or not these outcomes are relevant to newer viral variants, that are extra contagious and fewer neutralized by most vaccines, stays to be seen.”
Aug 15 JAMA Netw Open research letter
Omicron subvariant BA.5 now makes up 89% of US COVID-19 infections
The extremely transmissible Omicron subvariant BA.5 now causes virtually 90% of US COVID-19 instances, and First Girl Jill Biden has examined optimistic for the illness however has delicate signs.
The Facilities for Illness Management and Prevention’s (CDC’s) Nowcast variant tracker estimates that BA.5 now accounts for 88.8% of recent US COVID-19 instances, whereas BA.4 accounts for five.3% and BA.4.6 accounts for five.1% of recent instances. 4 weeks in the past BA.5 made up 74.0% of COVID-19 instances, and a pair of weeks in the past it accounted for 84.5%.
Jill Biden’s COVID-19 signs to date stay delicate, the White Home introduced in the present day, in line with the Related Press (AP). President Joe Biden continues to check damaging after recovering from COVID.
The 71-year-old first girl started experiencing signs late final night time after testing optimistic earlier within the day, the White Home stated in a press release. Each Jill Biden President Biden have obtained 4 doses of the Pfizer COVID vaccine. She has been prescribed Paxlovid and can isolate on the Biden trip house for no less than 5 days. Her shut contacts have been notified.
The 7-day common of recent day by day US COVID-19 instances is 99,832, with 489 day by day deaths, in line with the New York Instances tracker. The HHS Protect Public Data Hub reveals that 41,170 inpatient beds and 4,428 ICU beds are in use for COVID-19 throughout the nation. Nearly 87,000 baby COVID-19 instances have been reported for the week ending Aug 11, down from greater than 96,000 the earlier week, in line with the American Academy of Pediatrics.
In different US information, the College District of Philadelphia has mandated that college students and employees put on masks for the primary 10 days of the college 12 months and pre-kindergartners put on masks all college 12 months, Fox Information reports.
CDC Nowcast variant tracker
Aug 16 AP story
Aug 16 White House statement