Moderna's COVID-19 vaccine found to be 95% effective: Details here

The findings are based on Moderna's trial in the US involving 30,000 people split into two groups—one group received two doses of the shot, while the other was given a placebo.

The researchers found that based on data from 95 participants who developed COVID-19 symptoms, the vaccine had 94.5% efficacy. Of them, 90 were given the placebo, and the remaining five received the vaccine.

According to Moderna, of the 95 confirmed cases of COVID-19 during the trial, 11 were severe ones. However, none of the severe cases occurred in people who received the vaccine.

This development comes days after Pfizer and the German firm BioNTech announced that their vaccine candidate is 90% effective.

Notably, Moderna's vaccine is also based on a similar mRNA technology as the Pfizer/BioNTech vaccine.

Moderna said it plans to approach the US Food and Drug Administration (FDA), in the coming weeks, for an emergency-use authorization (EUA) for its vaccine.

However, its vaccine is unlikely to be available outside the US until next year. The company is projected to have 20 million doses ready in America by 2020-end, and manufacture 500 million to 1 billion doses globally in 2021.

Interestingly, Moderna said that the safety data available for its vaccine indicated no significant safety concerns.

On the other hand, side effects observed in the interim analysis reportedly included pain at the injection site, fatigue, and aching muscles and joints.

"This is a pivotal moment in the development of our COVID-19 vaccine candidate," said Stephane Bancel, Chief Executive Officer of Moderna, in a statement.

"Since early January, we have chased this virus with the intent to protect as many people around the world as possible. All along, we have known that each day matters," said Bancel.

"This positive interim analysis from our Phase 3 study has given us the first clinical validation that our vaccine can prevent COVID-19 disease, including severe disease," he added.

The cost for Moderna's two-shot course is, however, more expensive compared to other vaccine forerunners, reports say.

Moderna's vaccine is likely to cost around £38-45 (approximately Rs. 3,730-4,420), while Pfizer's two-shot course is expected to cost £30 (Rs. 2,950).

The Oxford University-AstraZeneca shot might cost £3 (Rs. 295), while both Johnson & Johnson and Sanofi-GSK vaccine candidates are expected to cost £8 (Rs. 785).

Despite being costlier than Pfizer's vaccine, Moderna's shot would have a major advantage in terms of shelf-life and stability.

Pfizer's vaccine must be stored between -70C and -80C, which might pose logistical challenges.

But Moderna's vaccine is easier to store and distribute. It can be stored at standard refrigeration temperatures of 2-8C for 30 days, and at -20C for six months for shipping/long-term storage.