<span style="color: #222222;">Bihar Chief Minister Nitish Kumar has ordered door to door  screening of all migrant workers on the lines of the pulse polio campaign to detect COVID-19. Mr.Kumar instructed to constitute teams in this regard immediately.<br />''<br />''The Chief Minister said the stress should be on keeping health infrastructure for testing and containing Coronavirus pandemic in a state of readiness in view of the arrival of large number of migrant workers.</span><br />