HHS to require placebo trials for new vaccines
The National Desk
[{'start': '0.080', 'end': '4.319', 'text': 'New vaccines will now have to be tested'}, {'start': '1.839', 'end': '6.160', 'text': 'in placeboc controlled trials before'}, {'start': '4.319', 'end': '9.200', 'text': 'they can be used. The Department of'}, {'start': '6.160', 'end': '11.519', 'text': 'Health and Human Services said this will'}, {'start': '9.200', 'end': '13.280', 'text': 'ensure vaccines are safe and effective.'}, {'start': '11.519', 'end': '15.519', 'text': 'Some scientists think this could make it'}, {'start': '13.280', 'end': '18.160', 'text': 'harder to update CO 19 shots for new'}, {'start': '15.519', 'end': '20.160', 'text': 'strains of the virus. HHS also announced'}, {'start': '18.160', 'end': '24.000', 'text': "it's developing surveillance systems to"}, {'start': '20.160', 'end': '24.000', 'text': 'better measure vaccine risks.'}]