The number of new coronavirus confirmed cases and deaths in many Latin American countries in a single day has continued to decrease recently. Cuba, Chile, Ecuador and other countries have gradually adjusted epidemic prevention and control policies while promoting vaccination. Experts believe that vaccination and adjustment of prevention and control policies will help economic recovery, but we need to remain vigilant against new risk factors such as variant COVID-19. Cuba's Ministry of Public Health announced on the 13th that it will vaccinate teenagers aged 12 to 18 with booster shots. The booster will continue to use its independently developed afdala, "sovereign 02" and "sovereign plus" three new coronal vaccines, which will be vaccinated six months after the completion of the second vaccination. The number of newly confirmed cases in Cuba in the past week fell to 2899 from 4290 in the previous week, and the number of new deaths fell to 1 from 4 in the previous week. Raul ginovat, Dean of the school of mathematics and computing at the University of Havana, said at the regular meeting of epidemic prevention and control recently that it is expected that the number of newly confirmed cases in Cuba will continue to decrease in the coming period, but preventive measures must be maintained and risk awareness should not be relaxed. Argentina began to vaccinate people with the second dose of booster injection on the 14th. The vaccination began in Buenos Aires Province, the country's most populous province, and then expanded to other regions. Nicolas kleprak, head of the health department of Buenos Aires Province, said that the vaccination booster can improve the ability of the region to deal with the Omicron strain, but the health department will remain vigilant against the emergence of new variants. The Chilean government announced on the 14th that it is no longer mandatory to wear masks outdoors in low-risk areas in the country, but people still need to wear masks in high-risk areas, indoor places and places where they cannot maintain a social distance of more than one meter. Chilean epidemiologist Vivienne Bachelet said wearing masks is necessary on many occasions, because wearing masks can not only reduce the spread of COVID-19, but also prevent other infectious diseases. Panama Ministry of health 15 reminded people that COVID-19 has not yet ended, the public should comply with the epidemic prevention measures. Entertainment places can operate normally, but the customer's vaccination QR code or vaccination card must be checked. Ecuadorian health minister Garzon announced on the 12th that from the 18th, when people enter shopping malls, cinemas, restaurants and other public places, they must show the vaccination card showing that they have completed the booster vaccination. According to the data of the Ministry of health of Ecuador, 82.62% of the target vaccinated population in the country have completed two doses of vaccination, and 33.08% of the target vaccinated population have received booster shots. She said that the high vaccination rate had played a positive role in the socio-economic restart of the country. The number of newly confirmed and dead cases in Colombia remained low on a single day last week. The Ministry of health and social security of Colombia calls on the public to remain vigilant, complete the whole vaccination or strengthen the vaccination in time, and correctly wear masks indoors and in places where people gather. (Xinhua News Agency)