Covid-19: The T Cell Story
&gt; Does this mean that if you recently had a Coronavirus that caused a head cold that you have a measure of protection?<p>Apparently, <i>no</i>, as there are no observed differences in the percentages of infected when the people who have children or work with children are compared with those who don&#x27;t. If the stated assumption were true, those that were more exposed to other coronaviruses (which would be expected among those having or being close to kids) would be as a group less prone to be infected. That was apparently not observed.<p>So the &quot;slowdowns&quot; are just the humans adapting their behavior to reduce their chances of getting infected. When Rt is 1 the growth is linear, as simple as that. Less of such changes in the population behavior, more people are getting infected, faster.<p>Source: translated transcript of the podcast of Christian Drosten. Hint: also, don&#x27;t believe what most of the media says that &quot;he said&quot; -- I&#x27;ve seen a lot of &quot;editorialized&quot; reporting of what he says, to the point of the end product being completely opposite of what he actually said. It&#x27;s that bad. One really has to go to the source and read. Unfortunately, it&#x27;s a lot of work, as the podcasts are long. So the people who don&#x27;t read the source tend to have completely wrong idea what he actually said -- that&#x27;s also why I&#x27;m not giving the specific link: if one doesn&#x27;t invest really a lot of energy and find and carefully the sources, one has more chance to acquire completely wrong conclusions as &quot;highlights.&quot;