Even in Israel, where 5.22 million people, or 56% of the total population of 9.3 million, received the second dose, the number of daily confirmed cases exceeded 1,000 with the spread of the delta mutation.
According to the Israeli Ministry of Health, on the 16th, the number of new cases surpassed the 1,000 mark and recorded 1,118.
It is the first time in four months that the number of new cases in Israel has exceeded 1,000.
The confirmed rate of the total number of tests is 1.58%, and the infection reproduction index is 1.37.
In Israel, about 5.22 million people, 56% of the total population, have been vaccinated up to the second round, and at one time, all quarantine measures, including wearing an indoor mask, were lifted.
However, in the absence of quarantine measures, as the delta mutation rapidly spread, the number of confirmed cases per day, which was only in the single digits at the beginning of last month, increased sharply.
However, because the majority of adults are vaccinated, the increase in the number of severe cases or deaths is only modest.
Professor Eran Segal, a computer biologist at the Weizmann Institute, said: "During the third outbreak, when there was no vaccine, the proportion of severe cases was over 4%, but now the rate is only 1.6%."
However, it is worrying that more than half of new confirmed cases and more than 60% of severe cases are vaccinated.
Israeli Prime Minister Naftali Bennett said: "The efficacy of the Pfizer vaccine to prevent delta mutations is weaker than the authorities hoped. We do not know exactly how much the vaccine will help, but it is quite weak."
He also said, "Vaccines are effective in preventing COVID-19, but vaccines alone are not enough at a time when delta mutations are rapidly spreading around the world."