Unvaccinated US School Teacher Spreads Coronavirus To 26 People.

Unvaccinated US School Teacher Spreads Coronavirus To 26 People

No one involved in the outbreak was hospitalized. (Representational)

Washington:

An unvaccinated teacher at an elementary school in California spread the coronavirus to at least 26 other people, including 12 students in their classroom, a new study by the Centers for Disease Control and Prevention (CDC) said Friday.

The health agency said the case highlights the importance of vaccinating school staff in order to protect young children who are not yet eligible for vaccines, as schools reopen amid a new nationwide surge driven by the ultra-contagious Delta variant.

The CDC said the incident took place in Marin County, a suburb of San Francisco.

The teacher, who reported attending social functions from May 13-16, became symptomatic on May 19 but did not take a Covid test until May 21, initially believing the symptoms were due to allergies.

"On occasion during this time, the teacher read aloud unmasked to the class despite school requirements to mask while indoors," the study said.

In the days that followed, among the teacher's 24 students, all ineligible for vaccination because they are under 12, 22 received tests and 12 were found to be positive.

Eight out of 10 students in the front two rows tested positive -- an attack rate of 80 percent -- as well as three out of 14 in the three back rows.

The school required students to mask, each student's desk was set six feet apart from the next, windows were open on both sides of the classroom, and a high-efficiency particulate air (HEPA) filter was placed in front of the class white board.

Six students in a separate grade also tested positive.

It wasn't clear how the virus spread between the two classes, with researchers presuming an interaction occurred at school.

However, genetic sequencing of available samples confirmed they were all part of the same outbreak, and identified the Delta variant as responsible.

Eight additional cases were identified among parents and siblings of children in the two grades. Among four parents infected, three were fully vaccinated.

Twenty-two of the 27 total infected people (81 percent) reported symptoms, the most frequently reported were fever, followed by cough, headache and sore throat.

No one involved in the outbreak was hospitalized.

The CDC said the outbreak was likely underestimated because all testing was voluntary.

"The outbreak's attack rate highlights the Delta variant's increased transmissibility and potential for rapid spread, especially in unvaccinated populations such as schoolchildren too young for vaccination," said the report's authors.

What works

In addition to vaccinating school staff, they stressed the need for multi-pronged mitigation strategies, including using masks, distancing and ventilation, and staying home when sick.

A second CDC study also released Friday was held up by the agency's director Rochelle Walensky as an example of what happens when best practices are followed.

It showed that during the winter pandemic peak, case rates among children and adolescents in Los Angeles County schools were nearly 3.5 times lower than rates in the surrounding community.

"We know what works. Now let us unify together to follow these steps to ensure fundamentally that our children and our future are safe," said Walensky at a press briefing.

(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)

NDTV News

NDTV.com provides latest news from India and the world. Get today’s news headlines from Business, Technology, Bollywood, Cricket, videos, photos, live news coverage and exclusive breaking news from India.

https://www.ndtv.com/

Related news

Covid Recovery Poses Dire Climate, Health Risks: Report.

Countries' fossil fuel-powered Covid-19 recoveries will have long-lasting consequences on human health and risk worsening the food and water insecurity, heatwaves and infectious diseases, a major...

NDTV News

Melbourne Prepares To Exit World's Longest Covid Lockdown.

Millions in Melbourne are readying to come out of the world's longest COVID-19 lockdown on Thursday night after Victoria state hit a key vaccination target, with pubs, restaurants and cafes racing to...

NDTV News

'No one is safe': Haitian speaks out after missionaries kidnapped.

'No one is safe': Haitian speaks out after missionaries kidnapped.

'No one is safe': Haitian speaks out after missionaries kidnapped #CNN #News

School Cafeterias Hurting From Supply Chain Issues And Price Hikes.

School Cafeterias Hurting From Supply Chain Issues And Price Hikes.

According to a recent survey of 1,400 school nutrition directors, nearly all are concerned about supply chain issues and 90 percent about staffing shortages. School cafeterias face an additional challenge of meeting USDA nutritional guidelines to ...

Nightly News Full Broadcast - October 18th

Nightly News Full Broadcast - October 18th

Remembering former Secretary of State Colin Powell, FBI and State Dept. team in Haiti after 17 missionaries kidnapped, conflict over Covid vaccine mandates in Chicago and beyond. 00:00 Intro 02:15 Remembering Colin Powell 05:17 Americans Kidnapped...

NBC News Exclusive: Former Miami Police Chief Art Acevedo Speaks Out.

NBC News Exclusive: Former Miami Police Chief Art Acevedo Speaks Out.

Former Miami Police Chief Art Acevedo was fired just six months into his tenure. Acevedo says he was fighting corruption and punished for accusing city commissioners of interfering with investigations, but critics cite several missteps for his ous...

Hannity: Vaccine mandates crushing first responders once hailed as heroes.

Hannity: Vaccine mandates crushing first responders once hailed as heroes.

Sean Hannity sounds off in his Opening Monologue on Monday #foxnews #hannity Subscribe to Fox News! Watch more Fox News Video: Watch Fox News Channel Live: FOX News Channel (FNC) is a 24-hour all-encompassing news service delivering breaking news ...

Nationwide standoffs continue over vaccine mandates l WNT.

Nationwide standoffs continue over vaccine mandates l WNT.

In California, “Our Children, Our Choice” protests against the vaccine mandate for students continue. In Chicago, the police union is in a standoff to protect officers who refuse to be vaccinated. WATCH THE FULL EPISODE OF 'WORLD NEWS TONIGHT': WA...