[ad_1] <br>Vaccines against the disease are desperately needed, but they won't necessarily prevent all or even most infections, experts say. <br>[ad_2] <br><a href="https://www.realclearpolitics.com/2020/05/24/we_may_be_overestimating_the_power_of_covid-19_vaccines_512088.html">ABCNews</a>