<div dir="ltr"><div dir="ltr"><p class="MsoNormal">I thought this topic may be of broader interest to the Lab community.</p><p class="MsoNormal"><br></p><p class="MsoNormal">This large study from Israel just got out.<u></u><u></u></p><div><p class="MsoNormal">It shows no increase of immunity to covid infection within the first 11 days after the first dose of Pfizer vaccine.<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal"><a href="https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.nature.com%2Farticles%2Fs41591-021-01316-7.pdf&data=04%7C01%7C%7Ce6a2e56c4a7949860e9e08d8f36cc317%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637526995742156455%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=jELp8IJOYUDuSlabIEKGptMcN4nOko1%2Fec2s%2BL9zHSk%3D&reserved=0" target="_blank">https://www.nature.com/articles/s41591-021-01316-7.pdf</a><u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">And this one from CDC shows 80% immunity 2+ weeks after either Pfizer or Moderna's first dose, and 90% 2+ weeks after the second dose of either vaccine.<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal"><a href="https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.cdc.gov%2Fmmwr%2Fvolumes%2F70%2Fwr%2Fmm7013e3.htm&data=04%7C01%7C%7Ce6a2e56c4a7949860e9e08d8f36cc317%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637526995742166446%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=BCfmClPXd3wfxIFybKQS2Xo5kj7aPyzSnBGGZtU3f1E%3D&reserved=0" target="_blank">https://www.cdc.gov/mmwr/volumes/70/wr/mm7013e3.htm</a><u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Unlike previous data, which was based on limited-size clinical trials and claimed 95% effectiveness ~3-4 weeks after the second dose, those two studies have been conducted on real-world samples, so they may carry more practical credibility.<u></u><u></u></p></div><div><br></div><div><p class="MsoNormal">Both results are optimistic, however they show that we should not assume any good effect of the vaccine and stay supersafe until at least day 12 after the first dose.</p><p class="MsoNormal"><br></p><p class="MsoNormal">Cheers,</p><p class="MsoNormal">Artur </p></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr"><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div class="gmail_quote"><div dir="ltr"><div dir="ltr"><div class="gmail_quote"><div><div name="messageSignatureSection"><div>
</div>
</div>
</div>

</div></div></div>
</div></div>
</blockquote></div></div>