A Small Brazilian Town Is Beating Covid-19 Through a Unique Experiment - WSJ 还记得巴西，3月份有一个4.5万人的小镇宣布，全部打科兴疫苗做实验，结果是成功了，在巴西还是有效的,目前这个镇是旅游景点了。怪不得昨天WHO批准了紧急使用科兴疫苗。。不管是什么疫苗，只要有用就是好事。美国辉瑞的效率更高，但是很多国家没有好的冷链和保存，更容易使用传统灭火疫苗。 SERRANA, Brazil—This town of 45,000 people in southeastern Brazil has been at the center of a unique experiment for the past three months: vaccinate nearly every adult against Covid-19 and see what happens. In recent weeks, after most of the adults here got their second dose, Covid-19 cases and deaths plunged and life has started to return to normal as the pandemic continues to rage across Brazil. In the heart of Serrana, children squealed with laughter as they chased each other across the main square, while groups of friends—many unmasked —stopped to chat and bask in the afternoon sun. “We feel free,” said Homero Cavalheri, 68 years old, a retired architect who said he no longer spends his afternoons cooped up at home. He was strolling with his wife, Irene, and their 1-year-old grandson. “Everything is new to him,” said Mr. Cavalheri, clutching the boy. “He keeps pointing at all the trees and the birds.” The experiment in Serrana, a town in Brazil’s sugar-cane-producing savanna, provides hope for countries around the world still battling with coronavirus outbreaks that mass vaccination works. It also offers new evidence of the efficacy of Sinovac’s Covid-19 vaccine, which is being rolled out in dozens of developing nations from Egypt to the Philippines.
All of Serrana’s adults were offered CoronaVac between February and April as part of the experiment, known as Project S. It is the first mass trial of its kind in which an entire town is vaccinated for Covid-19 before the rest of the country. Not everyone in the town was eligible, including minors under 18, adult women who are pregnant or nursing, and others with serious health problems. Of the roughly 27,700 eligible adults, 27,150, or 98%, were vaccinated, according to town officials.
还记得巴西，3月份有一个4.5万人的小镇宣布，全部打科兴疫苗做实验，结果是成功了，在巴西还是有效的,目前这个镇是旅游景点了。怪不得昨天WHO批准了紧急使用科兴疫苗。。不管是什么疫苗，只要有用就是好事。美国辉瑞的效率更高，但是很多国家没有好的冷链和保存，更容易使用传统灭火疫苗。
SERRANA, Brazil—This town of 45,000 people in southeastern Brazil has been at the center of a unique experiment for the past three months: vaccinate nearly every adult against Covid-19 and see what happens. In recent weeks, after most of the adults here got their second dose, Covid-19 cases and deaths plunged and life has started to return to normal as the pandemic continues to rage across Brazil. In the heart of Serrana, children squealed with laughter as they chased each other across the main square, while groups of friends—many unmasked —stopped to chat and bask in the afternoon sun.
“We feel free,” said Homero Cavalheri, 68 years old, a retired architect who said he no longer spends his afternoons cooped up at home. He was strolling with his wife, Irene, and their 1-year-old grandson. “Everything is new to him,” said Mr. Cavalheri, clutching the boy. “He keeps pointing at all the trees and the birds.” The experiment in Serrana, a town in Brazil’s sugar-cane-producing savanna, provides hope for countries around the world still battling with coronavirus outbreaks that mass vaccination works. It also offers new evidence of the efficacy of Sinovac’s Covid-19 vaccine, which is being rolled out in dozens of developing nations from Egypt to the Philippines.
All of Serrana’s adults were offered CoronaVac between February and April as part of the experiment, known as Project S. It is the first mass trial of its kind in which an entire town is vaccinated for Covid-19 before the rest of the country. Not everyone in the town was eligible, including minors under 18, adult women who are pregnant or nursing, and others with serious health problems. Of the roughly 27,700 eligible adults, 27,150, or 98%, were vaccinated, according to town officials.
这个镇98%的成年人打了疫苗以后，平均日增从67下降到17，重症下降更明显。说明疫苗有一定效果，但是很明显无法靠这个疫苗达到群体免疫的效果。另外45000人的小镇每天新增17人其实不少啊
你要对比巴西其他地方拉，因为病毒也是动态的。
你和不打疫苗比肯定是强的，但是很明显靠有效率低的疫苗无法形成群体免疫，看看塞舌尔还有巴西的这个镇就知道了
塞舌尔主要是印度影响把。不过英国和以色列的结果非常好。