The district administration on Thursday sealed containment zone Dumdumi village in Dhanbad’s Govindpur after a migrant labourer who returned from Surat, Gujarat, tested positive for Covid-19 on Wednesday night.

The youth who arrived from Surat earlier this week was asymptomatic but advised home quarantine. His swab sample sent to the Patliputra Medical College and Hospital lab tested positive. Now, he has been shifted to the Central Hospital’s Covid centre.

Dhanbad subdivisional officer Raj Maheshwaram, block development officer Sushil Kumar Rai, circle officer Vandana Bharti, among others, supervised the sanitisation at Dumdumi.

Dhanbad DC Amit Kumar said residents in the containment zone will get every essential item including grocery, milk, fruits and medicines at home, and advised people not to panic and stay indoors. They were also given contact numbers for procuring grocery, milk, medicines, among others.

Door-to-door survey across Dumdumi and its surrounding areas by health workers is likely to begin on Friday. The health team will visit every household and take details of every individual.

Altogether, seven novel coronavirus cases have been found from different parts of the district of which two, including a railway employee and a Kumardubi resident who worked at a glass factory at Asansol, Bengal, have recovered. Five others are being treated at Central Hospital.

The railway trackman, who was found infected on April 18, treated and released on April 27, joined work at the divisional railway manager’s office on Thursday. Before work, he was felicitated as a “corona warrior” in the presence of divisional railway manager Anil Kumar Mishra and senior divisional officer (personnel) Ujjwal Anand.