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A woman is tended by a nurse at a COVID-19 unit of the Honorio Delgado Hospital in Arequipa, Peru, on June 24, 2021. Due to increased cases of COVID-19 and the Delta variant of the disease, the city has been closed under a strict lockdown for 15 days beginning June 21. (AP/Guadalupe Pardo)

Delta variant is dangerous and is continuing to evolve and mutate: WHO...

Delta variant is expected to rapidly outcompete other variants and become the dominant variant over the coming months

3 July 2021 11:02 AM IST

COVAXIN is one of the three COVID-19 vaccines that are currently available in the country. (Photo: PTI)

Final analysis of Covaxin efficacy out; 65.2 per cent effective...

The efficacy analysis demonstrates Covaxin to be 93.4 per cent effective against severe symptomatic COVID-19 cases

3 July 2021 10:41 AM IST

A Tokyo Metropolitan Government employee takes the Modernas COVID-19 vaccine shot at a newly opened vaccination center in the government building in Tokyo. (Photo: AP)

Will one dose of a two-dose COVID-19 vaccine protect me?

Thereâ€™s a concern the shots eventually might lose their effectiveness if variants evolve enough

2 July 2021 1:02 PM IST

In this March 26, 2021, file photo, a member of the Philadelphia Fire Department prepares a dose of the Johnson & Johnson COVID-19 vaccine at a vaccination site setup at a Salvation Army location in Philadelphia. (Photo: AP)

Johnson & Johnson-'s single-dose vaccine shows promising signs against...

According to the company report, the vaccine generated strong, persistent activity against the Delta variant

2 July 2021 9:17 AM IST

The face mask sensors are designed so that they can be activated by the wearer when they are ready to perform the test. (Photo: news.harvard.edu)

Novel face mask developed by MIT, Harvard can detect COVID-19...

The mask design has embedded tiny, disposable sensors that can be fitted into other face masks

1 July 2021 8:02 AM IST

A medic holds a vial of Bharat Biotechs covid vaccine, Covaxin. (Photo: AFP)

Covaxin neutralises both Alpha, Delta variants of Covid-19: US top...

COVAXIN comprises a disabled form of SARS-CoV-2 that cannot replicate but still stimulates the immune system to make...

30 Jun 2021 8:01 AM IST

Many universities are only accepting the students who have been vaccinated with a WHO-approved COVID-19 vaccine. (Photo: Representational/PTI)

Oxford study says mixing COVID-19 vaccines gives good protection

The University of Oxford is leading the Com-COV study, run by the National Immunisation Schedule Evaluation Consortium

29 Jun 2021 8:55 AM IST

A beneficiary reacts as she receives a dose of COVID-19 vaccine. (PTI)

Current Covid vaccines may be less effective against Beta variant:...

Spike proteins enable the virus to attach to and enter our cells, and all current vaccines are directed against them

28 Jun 2021 1:05 PM IST

Microplastics can be carried hundreds or thousands of miles away from the source by ocean currents. (Photo: PTI/File)

Scientists use NASA satellite data to track ocean microplastics from...

These small flecks of plastic are harmful to marine organisms and ecosystems

27 Jun 2021 10:18 AM IST

WHO Director General, Tedros Adhanom Ghebreyesus. (AFP Photo)

Delta the -'most transmissible-' of variants identified so far: WHO...

Delta, now reported in 85 countries globally, continues to be reported in new countries across all WHO Regions

26 Jun 2021 11:42 AM IST

A medical worker holds a vial of Russias Sputnik V vaccine for Covid-19. (Photo:AP/File)

Sputnik V is safest among all Covid vaccines, no deaths recorded:...

The study showed that the Events Supposedly Attributable to Vaccination or Immunization (ESAVI) were mostly mild

25 Jun 2021 1:11 PM IST

While seven cases were reported from a medical centre in Kerala, where about 1.2 million people were administered the AstraZeneca COVID-19 vaccine, known as Covishield in India, four were reported from Nottingham, UK, in an area in which approximately 700,000 (7 lakh) people received the jab. (PTI Photo)

What should I know about the delta variant?

Experts say the delta variant spreads more easily because of mutations

24 Jun 2021 11:30 AM IST