Wisconsin-A report from the Centers for Disease Control and Prevention (CDC) showed that a summer vacation for high school students in Wisconsin resulted in more than 100 students, faculty and staff testing positive for COVID-19.
From July 2 to August 11, more than 116 high school boys and staff in the retreat were infected or possibly infected with the coronavirus. The Department of Health Services said at a press conference on Thursday that the refugee camp is located in southeastern Wisconsin. The CDC report did not find the camp.
According to data from the Centers for Disease Control and Prevention, students come from 21
Even after all students and staff who plan to participate in the retreat are required to receive a negative COVID-19 test within 7 days from the day the retreat leaves or receive a positive antibody test within three months before the incident.
Among all students, 28 students tested positive for antibodies before retiring.
During the retreat, students do not need to wear a mask, and can roam and mix freely in the area. Classes are held in an outdoor pavilion, each classroom has about 20 students. However, these students are socially distant.
According to data from the Centers for Disease Control and Prevention (CDC), on July 3, a student reported feeling chills, sore throat and coughing. He was tested for COVID-19 and received a positive result on July 5.
Then the student learned that about a week after he left, a family member tested positive for COVID-19.
He was placed in a separate room, and 11 of his close friends were isolated in a separate dormitory. The 11 close contacts tested negative for the COVID-19 antigen and were released from the quarantine area on July 7. However, public health officials did not confirm its testing.
From July 4 to July 7, 6 of 11 close contacts began to develop COVID-19 symptoms, and the other 18 students with unknown contact history also began to develop COVID-19 symptoms.
The US Centers for Disease Control and Prevention (CDC) reported that masks were provided to these students, but no contact tracing was conducted and no students were isolated.
On July 13, one of these 11 close contacts received a positive COVID-19 test result from a local clinic.
On July 15, the Wisconsin Department of Health Services received the notice. The CDC report stated that they initiated an outbreak investigation and guided the retreat organizers to take mitigation measures, such as symptom monitoring, isolation of symptomatic participants, and isolation of contacts, but a large number of symptomatic participants exceeded this. The ability of similar measures. .
On July 28, the Wisconsin Department of Health visited the retreat and inspected 148 of the 152 participants in the retreat. Among these attendees, 116 were classified as having COVID-19 or possibly having COVID-19.
By the end of the retreat, 118 students had tested positive for antibodies, which means they had contracted the virus at some point.
According to the CDC report, 118 of the 37 participants with possible COVID-19, 65 of the 76 participants who confirmed COVID-19, and 16 of the 23 participants who were antibody positive before the retreat, And 7 of the 12 participants who were not diagnosed with COVID-19 or previous antibody results.
The CDC says that every dormitory has at least one confirmed case.
All in all, 78 students at the retreat tested positive for the coronavirus, of which 38 met the COVID-19 criteria but did not test positive, and 28 students had antibodies even before they left.
At the end of the retreat, the 28 positive antibody test results jumped to 118.
On August 11, all students were allowed to return to their homes within one month of arrival. The Wisconsin Department of Health and the Centers for Disease Control and Prevention conducted an investigation into the outbreak. The following are some of their findings:
- There is no significant difference in seizure rate between counselor and student, dormitory or grade
- Compared with other published reports, the proportion of asymptomatic COVID-19 infections in this population is low (1%)
- In a concentrated environment lacking COVID-19 mitigation measures, COVID-19 can spread rapidly among young people.
- Detectable antibodies may provide protection against new COVID-19 infections for an unknown duration
- To prevent the introduction of COVID-19, the mitigation plan should also include pre-arrival quarantine, pre-arrival and post-arrival testing and symptom screening, isolation and quarantine, queues, physical distancing, wearing masks, enhanced hygiene and disinfection, and maximum outdoor use Programming
We have contacted the Wisconsin Department of Health Services for more information. However, you can read the CDC’s full report here.
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