* AstraZeneca's COVISHIELD, Bharat Biotech's COVAXIN approved
* COVISHIELD found 70.42% effective in studies overseas
* COVAXIN "safe and provides a robust immune response"- regulator
* No efficacy data provided for COVAXIN (Adds comments from local maker of Astra vaccine)
By Krishna N. Das and Aftab Ahmed
NEW DELHI, Jan 3 (Reuters) - India's drugs regulator on Sunday approved for emergency use two coronavirus vaccines, one developed by AstraZeneca AZN.L and Oxford University and the other by local company Bharat Biotech and a state-run institute.
The decisions mark the first vaccine approvals in India, which after the United States has recorded the most infections of the novel coronavirus, and could enable the country to source vaccines locally.
India is expected to start a massive immunisation programme within about a week, and hopes to inoculate 300 million of its 1.35 billion people free of charge in the first six to eight months of this year.
Prime Minister Narendra Modi welcomed the approvals.
"It would make every Indian proud that the two vaccines that have been given emergency use approval are made in India!" he said on Twitter, calling it a sign of a "self-reliant" country.
India has reported more than 10.3 million COVID-19 cases and around 150,000 deaths, though its infection rate has come down significantly from a mid-September peak.
The AstraZeneca shot, already approved in Britain, Argentina and El Salvador, will take the lead in India and Bharat Biotech's COVAXIN will be administered under stricter conditions given no efficacy data has been released for it.
The Indian government has yet to sign a formal deal for the AstraZeneca vaccine with its local maker, Serum Institute of India (SII), although this is expected within days. SII has stockpiled 50 million doses.
Health Minister Harsh Vardhan said on Twitter India was ready for a "quick and equitable" distribution of vaccines.
SII expects the government to buy 100 million doses from it in the next two months and restrict exports until then, Chief Executive Adar Poonawalla told Reuters.
By August, it aims to provide 300 million doses and has also seen interest from African and Asian countries including Bangladesh. L4N2JE087
LACK OF DATA
Drugs Controller General of India V.G. Somani said the overall efficacy of the AstraZeneca vaccine, locally branded COVISHIELD, was 70.42% based on trials done overseas. No efficacy study has been done in India.
Bharat Biotech's COVAXIN, developed with the government-run Indian Council of Medical Research, was found "safe and provides a robust immune response", Somani said.
Both vaccines will be administered in two doses and stored at 2-8° degrees Celsius (36 to 48°F), he said.
Poonawalla said they recommended that the AstraZeneca vaccine be administered eight to 10 weeks apart.
The AstraZeneca vaccine, granted its first approval by Britain last week, is cheaper and easier to use than some rival shots, such as one from Pfizer Inc (NYSE: PFE ) PFE.N .
The British shot, however, has been plagued by uncertainty about its most effective dosage ever since data published in November showed a half dose followed by a full dose had a 90% success rate, while two full shots were 62% effective.
The efficacy of the Indian vaccine COVAXIN could "go up much more" than 60% after two doses are given, a source with knowledge of the matter told Reuters. Bharat Biotech earlier said they could produce up to 300 million doses a year. this vaccine addresses an unmet medical need during this pandemic, our goal is to provide global access to populations that need it the most," the company's chairman, Krishna Ella, said. "COVAXIN has generated excellent safety data with robust immune responses."
An opposition lawmaker and former minister, however, questioned the approval process for COVAXIN.
"Bharat Biotech is a first-rate enterprise, but it is puzzling that internationally accepted protocols relating to phase 3 trials are being modified for Covaxin," Jairam Ramesh wrote on Twitter. regulator has also received an emergency-use application for the COVID-19 vaccine made by Pfizer and Germany's BioNTech 22UAy.DE - the first shot to secure regulatory approval in the West.
SII plans to sell the AstraZeneca vaccine to the Indian government at about 250 rupees ($3.42) per dose and 1,000 rupees on the private market.
The regulator on Sunday also allowed Cadila Healthcare Ltd CADI.NS to conduct Phase-III trials on 26,000 participants for its DNA-platform vaccine candidate, saying the interim trial data had shown it was "safe" and prompted an immune response under a three-dose regimen.
<^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Main vaccine candidates being rolled out
India's coronavirus vaccine approved by drugs experts
(Additionbal reporting by Nigam Prusty and Shilpa Jamkhandikar; Editing by Neil Fullick and Alexandra Hudson)
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