Thread by @yaneerbaryam

Coronavirus cases take big jump in Texas day care centers @tomaspueyo 1/

texastribune.org/2020/06/26/tex…

Texas Department of Health and Human Services reported at least 1,335 positive Covid-19 cases throughout the state's open child care facilities.

Of those cases, 894 are among staff and 441 are children, a spokesperson for the state department said. 2/

The positive cases are reported in 883 of the state's child care facilities. The department said that there are 12,220 open child care operations throughout the state. 3/

How these numbers compare: On May 15, the state reported a total of 59 cases in 53 child care facilities — 36 staff and 23 children. And on June 15, there were 210 reported cases in 177 facilities, 141 staff and 69 children. 4/

Two weeks after Israel fully reopened schools, a COVID-19 outbreak sweeping through classrooms — including at least 130 cases at a single school — has led officials to close dozens of schools where students and staff were infected.
npr.org/sections/coron…

Multiple schools have been closed in Israel and thousands of students sent into quarantine after multiple students and staff members at schools in Jerusalem, Beersheva and Hadera tested positive for coronavirus.

jns.org/thousands-of-i…

PARIS — Just one week after a third of French schoolchildren went back to school in an easing of coronavirus lockdowns, a worrying flareup of about 70 COVID-19 cases has been linked to schools.
nbcnews.com/health/health-…

On Wednesday, a spokesperson for Canyon State Academy confirmed they have 23 students that tested COVID-19 positive and eight staff members....
"Canyon State Academy has diligently followed best protocols, CDC recommendations ..."
msn.com/en-us/finance/…

Suspected covid-19 outbreaks in schools almost doubles

"the number of “acute respiratory outbreaks” in schools rose from 24 to 44 – 16 more outbreaks than were recorded at hospitals.:

schoolsweek.co.uk/suspected-covi…… via
@schoolsweek

At least 20 people, including eight children, have contracted the novel coronavirus linked to an outbreak at a child care facility in Lake Oswego, Ore., according to a local report.

Twelve teachers and eight students have tested positive for COVID-19

foxnews.com/health/coronav…

"Although proactive school closures cannot interrupt transmission on their own, they can reduce peak incidence by 40 to 60% and delay the epidemic."

science.sciencemag.org/content/368/64…

For some reason when people hear “less than,” they think of 1 in 100 instead of 1 in 2.

This is relevant to severity of cases in children

Severe illness in children is NOT very low incidence:

Hospitalization in children compared to adults 18-64 is 5.7% vs 10% (all cases) or 20% vs 33% (hospitalization status known). Not 1 in 10, or 1 in 100, it is reduced by perhaps a factor of 2

cdc.gov/mmwr/volumes/6…

Across all ages: Among all 2,572 cases in children aged <18 years, the median age was 11 years (range 0–17 years). Nearly 1/3 (813; 32%) aged 15–17, then children 10–14 years (682; 27%), 398 (15%) aged <1 year, 291 (11%) aged 1–4 years, and 388 (15%) aged 5–9 years.

Incidence in children: Low, not very low. Among 149,082 (99.6%) reported cases for which age was known, 2,572 (1.7%) were among children aged <18 years, which are 22% of the US population. So relative incidence is 8%. This means that children are sick about 1 in 12 times as much.

This is consistent with Sweden data

In Sweden, kids are relatively unprotected. Population data based on 2018 World Bank data, COVID age based on statista.com/statistics/110…

The last column is COVID percentage / Age percentage, the higher it is the more vulnerable is an age group.

Children are indeed less likely to get COVID:
age 0-9 0.05,
age 10-19 0.33,
but not negligible compared to
age 20-29 0.96,
age 30-39 1.15.

Note ratio should be considered relative to daily contact number. Just as 60-79 is lower than 30-59, so reduced daily social activities can outweigh increased susceptibility. Low values 0.05 and 0.33 of children may be due to relatively small social network (especially 0-9 yo)

https://twitter.com/yaneerbaryam/status/1280224793598582789?s=20