<a href="/blog/do-you-know-viruses-and-immunity"><img src="https://www.occucare.co.in/blog/wp-content/uploads/2020/05/Do-you-know_-Viruses-and-Immunity.jpg" alt="Do you know Viruses and Immunity" width="618" height="309" class="alignnone size-full wp-image-194" /></a>

<h2>Do You Know?</h2>

<ul>
<li>During single coughing by infected individual 3000 droplets spreads in the environment. While in sneezing 40000 droplets spreads up to one-meter distance having a speed of 300km/hour.<!--moreRead more &gt;--></li>
<li>Each droplet contains approx. 20 lakh viruses.</li>
<li>It may float in air once attached to dust particles and survive for 2 to 3 hours. The survival rate on surfaces depends as follows:
<ul style="margin: 5px 20px;">
<li>Glass - 96 hours</li>
<li>Plastic and steel –72 hours</li>
<li>Cardboard - 24 hours</li>
<li>Older people and people with pre-existing medical conditions (such as diabetes and heart disease) appear to be more vulnerable as their immunity is normally less in comparison to younger

</ul>
</li>
</ul>