<Anchor> The



United States has decided to start the third dose of the vaccine for all citizens from next month. Conflict is growing in the United States over the mandatory wearing of masks.



Correspondent Yunsu Kim from Washington.



<Reporter>



Today (19th), one day before the opening of elementary and secondary schools in Austin, Texas, a parent protester against wearing a mask gathered in front of the school district.



[Stevens/Protesters against wearing masks: The premise of vaccines and masks is to prevent death, not to get sick. Children can get sick, and adults can get sick too. You could catch a cold or pneumonia. The virus is always around.] In



some schools, physical clashes have occurred at teacher meet-up events, such as parents tearing teachers' masks.



[Leonard / U.S. Superintendent of Austin City, Texas: This is a very sad and disappointing situation. Even if you oppose the mandatory mask, people who



wear masks

should be respected.] In

Florida and Arizona, where mandatory wearing of masks is prohibited by law, school officials will be punished if they are mandatory, and education subsidies will be cut off.



While the conflict over quarantine guidelines intensified, the average daily number of new confirmed cases in the United States soared to 140,000.



In particular, the number of infected with the delta mutation increased to 98.8% of the total.



The U.S. health authorities officially announced the introduction of the third dose of the vaccine and booster shot to catch the spread of the delta mutation.



Starting on the 20th of next month, Pfizer and Moderna have decided to give the third dose to all Americans who have been vaccinated for eight months.