testing is that if you know that you are positive then you can take steps to isolate from other and to not spread it and so it is very important to know your covid status charles: mass testing and early contact tracing may be best defending for the foreseeable future. u.s. population may not move the needle more in terms of the current 63% of americans who are fully vaccinated and the 38% who were boosted. former biden administration adviser dr. saline tweeting, quote, it is now highly unlikely that the u.s. will hit the 85 to 90% of americans vaccinate today get the others to get to the other side of the pandemic and keep pushing forward with its message. president biden, you will see in his statement, will continue to call on businesses to