<div dir="ltr"><div><font size="4"><a href="https://www.nature.com/articles/d41573-020-00073-5?utm_source=Nature+Briefing&utm_campaign=98c3a376d1-briefing-dy-20200409&utm_medium=email&utm_term=0_c9dfd39373-98c3a376d1-44221073">COVID-19 vaccine development landscape</a></font><br></div><div><br></div><div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><font size="4">John K Clark</font></div><br></div></div>