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Covid-19 cases surge in India: Spike reported in Delhi, Maharashtra, Karnataka

The uptick has been observed particularly in southern states like Kerala, Tamil Nadu, Karnataka, and Telangana, as well as in Delhi and Maharashtra.

May 25, 2025 / 08:51 IST
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According to data from INSACOG, one case of the NB.1.8.1 variant and four cases of the LF.7 variant have been detected in India.

Several states have been witnessing a gradual rise in COVID-19 cases this past week, with health authorities confirming that most of the recent infections remain mild in nature.

The uptick has been observed particularly in southern states like Kerala, Tamil Nadu, Karnataka, and Telangana, as well as in Delhi and Maharashtra.

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Amid the rising cases, the Union Health Secretary, on Saturday, chaired a high-level review meeting with top officials from the Indian Council of Medical Research (ICMR), Directorate General of Health Services (DGHS), and the National Centre for Disease Control (NCDC). The meeting focused on containment efforts and surveillance strategies to track the virus’s spread.

The Health Ministry said that while fresh cases are being reported from multiple urban centres, including Delhi, Noida, Hyderabad, Bengaluru, Thane, Indore, and Rishikesh, most of these are being managed through home isolation and do not require hospitalisation. Recent fatalities in Thane and Bengaluru were linked to severe comorbidities and not the virulence of the virus.

COVID-19 Vaccine
Frequently Asked Questions

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How does a vaccine work?

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.

How many types of vaccines are there?

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.

What does it take to develop a vaccine of this kind?

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.
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