233 staff members at 2 San Francisco hospitals have tested positive, most in breakthrough Delta infections.
Between 75 and 80 percent of staff members who tested positive for the coronavirus at Zuckerberg San Francisco General Hospital were fully vaccinated. Credit...Jeff Chiu/Associated Press
At least 233 staff members at two major San Francisco hospitals, most of them fully vaccinated, tested positive for the coronavirus this month, and most, according to a hospital official, involved the highly contagious Delta variant.
Some of the cases were asymptomatic, most involved mild to moderate symptoms and only two required hospitalization, officials said. The infections were determined to be Delta-related because most samples in San Francisco were tested for the variant, which is now dominant in the city.
About 75 to 80 percent of the more than 50 staff members infected at Zuckerberg San Francisco General Hospital were fully vaccinated, Dr. Lukejohn Day, the hospital’s chief medical officer, said in an interview on Saturday. The University of California, San Francisco Medical Center said in a statement issued on Friday that 153 of its 183 infected staff members had been fully vaccinated.
The statement from the U.C.S.F. Medical Center said that two of the infected staff members required hospitalization. None of the infected staff members at San Francisco General have been hospitalized and most had mild to moderate symptoms, Dr. Day said. The asymptomatic cases were discovered through contact tracing.
Without vaccinations, Dr. Day said, the hospitalization rate would be much worse.
“We’re concerned right now that we’re on the rise of a surge here in San Francisco and the Bay Area,” Dr. Day said. “But what we’re seeing is very much what the data from the vaccines showed us: You can still get Covid, potentially. But if you do get it, it’s not severe at all.”
On July 11, San Francisco ordered that workers in high-risk workplaces, including hospitals, be vaccinated by Sept. 15. The U.C.S.F. statement said that the hospital was “doubling down on our efforts to protect our staff. This includes requiring all employees and trainees to comply with the new UC-systemwide Covid-19 vaccination mandate, with limited exceptions for medical or religious exemptions.”
Staff members at both hospitals have continued to wear personal protective equipment, Dr. Day said. But the number of staff infections reported in July is about as many as during the peak of the winter surge.
“We’re nervous that we could potentially exceed it,” Dr. Day said.
Between 75 and 80 percent of staff members who tested positive for the coronavirus at Zuckerberg San Francisco General Hospital were fully vaccinated. Credit...Jeff Chiu/Associated PressBy Eduardo Medina
July 31, 2021, 5:13 p.m. ETAt least 233 staff members at two major San Francisco hospitals, most of them fully vaccinated, tested positive for the coronavirus this month, and most, according to a hospital official, involved the highly contagious Delta variant.
Some of the cases were asymptomatic, most involved mild to moderate symptoms and only two required hospitalization, officials said. The infections were determined to be Delta-related because most samples in San Francisco were tested for the variant, which is now dominant in the city.
About 75 to 80 percent of the more than 50 staff members infected at Zuckerberg San Francisco General Hospital were fully vaccinated, Dr. Lukejohn Day, the hospital’s chief medical officer, said in an interview on Saturday. The University of California, San Francisco Medical Center said in a statement issued on Friday that 153 of its 183 infected staff members had been fully vaccinated.
The statement from the U.C.S.F. Medical Center said that two of the infected staff members required hospitalization. None of the infected staff members at San Francisco General have been hospitalized and most had mild to moderate symptoms, Dr. Day said. The asymptomatic cases were discovered through contact tracing.
Without vaccinations, Dr. Day said, the hospitalization rate would be much worse.
“We’re concerned right now that we’re on the rise of a surge here in San Francisco and the Bay Area,” Dr. Day said. “But what we’re seeing is very much what the data from the vaccines showed us: You can still get Covid, potentially. But if you do get it, it’s not severe at all.”
On July 11, San Francisco ordered that workers in high-risk workplaces, including hospitals, be vaccinated by Sept. 15. The U.C.S.F. statement said that the hospital was “doubling down on our efforts to protect our staff. This includes requiring all employees and trainees to comply with the new UC-systemwide Covid-19 vaccination mandate, with limited exceptions for medical or religious exemptions.”
Staff members at both hospitals have continued to wear personal protective equipment, Dr. Day said. But the number of staff infections reported in July is about as many as during the peak of the winter surge.
“We’re nervous that we could potentially exceed it,” Dr. Day said.
https://www.nytimes.com/2021/07/31/us/covid-san-francisco-hospital-delta.html
因为这些人需要定期反复测核酸，才会查出。如果不是暑假，学生及教职员工需要经常普测，肯定会发现更多无症状感染者。
无症状或轻症说明疫苗的有效性。但疫苗对预防Delta的效果明显不如针对原型病毒和其他已知变异的效果。
我州州长提醒老年人和免疫差有基础病的人要多加小心。
我州规定公交还是要戴口罩，但有些乘客就是不戴。司机拒绝他们上车，这些人就打司机甚至砸碎车窗。
很多民眾也還沒有防護意識，差不多已經到了不可收拾的局面
无症状和轻症感染对感染者本人也许没啥，对病毒的传播扩散贡献就会很大。免疫有缺陷和老弱病残者还是得不到有效保护。
只要有神秘病例存在，悉尼疫情就难控制。
Really confused.
如果还是同样的疫苗，我的兴趣就没那么大了
现在的问题是，老年人、有免疫缺陷的人，自身的免疫反应比较迟钝，需要打第三针加把劲。
从抗体水平看，对普通健康人群，辉瑞第一针，触发的抗体浓度很低，第二针才把抗体水平极大地提高。