Project reveals asymptomatic spread in schools

"A pilot project in the Omaha Public School district detected new SARS-CoV-2 infections which wouldn't have been detected otherwise...

1/… via @TwitterAPI
"indicating that infection and case rates in schools are much higher that what's being reported

"Infection rates detected..were two-and-a-half times higher for staff and nearly six times higher for students than what was routinely observed.

"Additionally, the project found almost 10 times the cases per population than what was observed through community testing in the surrounding county.

"This data shows the prevalence of SARS-CoV-2 infection in school-aged children is being dramatically underestimated,"

"The project screened students and staff without symptoms via weekly PCR saliva test, along with environmental air, surface and wastewater testing

"During the pilot period, OPS was using a hybrid attendance model to decrease classroom density with about 1/4 as many students

"Our results show as many as nine in 10 student COVID-19 cases and seven in 10 staff cases might be missed by conventional reporting."


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More from @yaneerbaryam

1 May
India reported over 400,000 new cases, over 3,500 new deaths (both likely under-reported)

US will deny entry to most foreigners who have stayed in India within last 14 days, starting May 4

However, there is no quarantine for returning Americans, as from China Jan 31 2020.

Simultaneously, the US is sending oxygen tanks to India to help medical care. International cooperation is essential for better outcomes for all. It would be wise to invest more in helping all countries eliminate Covid.

France has reported its first confirmed case of the Indian Covid variant.

Read 6 tweets
25 Apr
#ZeroCovid New Zealand hosts a 50,000 fan concert, the biggest event since the pandemic began

Washington state cases increasing rapidly: 4th "wave"…

Japan has not declared it is canceling Olympics despite their third wave

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23 Apr
New study on NY B.1.526 variant warns possible reduced vaccine effectiveness:

“Pseudovirus containing spike gene mutations associated with B.1.526 was SIGNIFICANTLY MORE RESISTATANT TO NEUTRALIZATION by either convalescent or vaccinee plasma.”

“…high frequencies of SARS-CoV-2 variants has potential impacts on selection of appropriate antibody therapeutics and vaccination strategies.”

Contrast @NYTimes article citing it:

"Vaccines Are Effective Against the New York Variant, Studies Find

"The research adds to a growing number of findings suggesting the Pfizer and Moderna shots are protective against the variants identified so far.…

Read 4 tweets
21 Apr

British Columbia, Canada, declared they will restrict travel between health zones: Divide and conquer strategy is key to winning.

Next step: Stop transmission by rapid identification and supported quarantine.

Here is the roadmap:

India's cases and deaths continue to reach all-time highs.

Multiple reports on double mutant variant are inconsistent about its role. Limited sequencing being done. It may well be important. Reports of a tripple mutant variant surfacing.

Vaccines at risk.

"Rajeshwari Devi, 58, died on Sunday after waiting for two days to get uninterrupted oxygen, an ambulance and a bed in a Covid-19 hospital.

"She kept waiting and gasping but it was too late by the time help arrived.

Read 21 tweets
19 Apr
How can airlines claim flights are safe when there is no record of who was infected on board.
"There is a new record for the number of coronavirus infections traced back to a single commercial airline flight. A whopping 47 passengers..from New Delhi to Hong Kong April 4 have since tested positive for Covid-19. That number represents 25% of the 188 passengers on board.

"All passengers..had tested negative for the virus within 72 hours prior to departure, in keeping with Hong Kong’s travel requirements. Yet 25 travelers tested positive immediately after landing in Hong Kong, and a further 22 cases were discovered on day 12.

Read 7 tweets
19 Apr
Canada’s Crazy Pandemic Response
"As the third wave built and now may drown us, our leaders keep blathering about ‘balance.’

"If you want to know how crazy the COVID-19 crisis has become in Canada, just listen for a moment..

"to Quebec Premier Francois Legault.

“We’ve had no choice but to lock down, reopen, lock down, reopen,” protested the premier last week as he acknowledged how fed up people are with Canada’s disastrous yo-yo approach to COVID-19.

“The idea is to try to find a balance,” added Legault. “When we lock down, it’s to protect people’s physical health; when we reopen, it’s to help their mental health.”

Read 7 tweets

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