The weekly report of COVID-19 released by the World Health Organization on the 13th showed that the number of newly confirmed cases worldwide has risen for the fifth consecutive week, especially the new subtype Ba of the mutated novel coronavirus Omicron strain The spread of 5 is accelerating. Health departments in many countries warned that the rapid rebound in the number of cases means that epidemic prevention should not be relaxed. This is the 100th weekly epidemic report released by who. Data showed that more than 5.7 million new confirmed cases had been added in the week ending on the 10th, an increase of 6% over the previous week; There were about 9800 new deaths, basically unchanged from the previous week. The weekly report shows that among the six regions of the world divided by who, the number of newly confirmed cases in the Western Pacific region increased the most, an increase of 28% over the previous week; The largest decline was in Africa, down 33% from the previous week; The number of new deaths in the eastern Mediterranean region increased by 78%, ranking first in the world. The largest decline was in Africa, where the number of deaths fell by 17% over the previous week. This week, France, the United States, Italy, Germany and Brazil ranked first in the number of newly confirmed cases reported by countries and regions around the world. Omicron is still the most prevalent strain in the world. The "Global Initiative for influenza data sharing" platform received 159848 covid-19 genome sequence information within 30 days as of the 10th. Data show that 84% of these sequences have been confirmed to be Omicron strain, of which ba 5 and ba The proportion of subtype 4 continued to rise. Comparing the viral genome sequences reported from June 19 to June 25 and from June 26 to July 7, it can be found that ba The proportion of subtype 5 increased from 42% to 50%, ba The proportion of subtype 4 increased from 11% to 14%; Same period, ba The proportion of subtype 2 decreased from 7% to 4%, ba 2.12.1 the proportion of subtypes decreased from 13% to 7%. Health departments in many countries have confirmed that the epidemic has rebounded: 2380 newly confirmed covid-19 cases were added in Slovenia on the 12th, the highest in three months; South Korea reported more than 40000 new confirmed cases in a single day on the 13th, the highest in two months; Japan reported nearly 100000 new confirmed cases on the 14th, which is close to the highest record of new confirmed cases in a single day. Data released by the who on the 13th showed that 980691 new covid-19 cases were confirmed worldwide compared with the previous day, with a total of 555446890 confirmed cases; There were 1321 new deaths, with a total of 6353692 deaths. In the face of the new changes in the epidemic, some countries have warned the public not to relax their vigilance and formulated corresponding epidemic prevention measures. Brazil, Italy, Cyprus and other countries have recently adopted stricter requirements for wearing masks in some places; Peru, Israel and other countries have taken more active measures to strengthen vaccination. (Xinhua News Agency)