Tamil Nadu on June 29 extended the state-wide coronavirus lockdown till July 31, hours after Maharashtra did the same.
The stipulations under Unlock 1.0 will continue to remain in place.
Both Maharashtra and Tamil Nadu have been reporting high number of cases and are among the worst-hit by the pandemic in India.
Tamil Nadu reported nearly 4,000 fresh cases on June 29, taking the total tally to over 86,000. An additional 62 more deaths took the toll to 1,141.
Chennai recorded 2,167 of the 3,949 new cases in the state and nearby Chengelpet reported 187, Tiruvallur 154 and Madurai 303.The remainder was scattered in other districts, a health department bulletin said.
Frequently Asked Questions
A vaccine works by mimicking a natural infection. A vaccine not only induces immune response to protect people from any future COVID-19 infection, but also helps quickly build herd immunity to put an end to the pandemic. Herd immunity occurs when a sufficient percentage of a population becomes immune to a disease, making the spread of disease from person to person unlikely. The good news is that SARS-CoV-2 virus has been fairly stable, which increases the viability of a vaccine.
There are broadly four types of vaccine — one, a vaccine based on the whole virus (this could be either inactivated, or an attenuated [weakened] virus vaccine); two, a non-replicating viral vector vaccine that uses a benign virus as vector that carries the antigen of SARS-CoV; three, nucleic-acid vaccines that have genetic material like DNA and RNA of antigens like spike protein given to a person, helping human cells decode genetic material and produce the vaccine; and four, protein subunit vaccine wherein the recombinant proteins of SARS-COV-2 along with an adjuvant (booster) is given as a vaccine.
Vaccine development is a long, complex process. Unlike drugs that are given to people with a diseased, vaccines are given to healthy people and also vulnerable sections such as children, pregnant women and the elderly. So rigorous tests are compulsory. History says that the fastest time it took to develop a vaccine is five years, but it usually takes double or sometimes triple that time.
After announcing relaxations, including partial resumption of public transport services, as part of Unlock 1.0 across the state from June 1, the government re-imposed intense lockdown in Chennai and parts of neighbouring Chengelpet, Tiruvallur and Kancheepuram from June 19.