India Not To Vaccinate All For Covid Control: Upsides And Unknowns

With 9.46 million cases and 137,621 deaths, India has currently the world’s second-highest number of coronavirus infections, behind only the United States, reported Reuters on December 01, 2020.

Fathoming seriousness of rapidly unfolding Covid induced all round disruptions across the nation, on October 17, 2020, the Indian Prime Minister issued a clarion call. He called for full preparedness of the country to ensure speedy access to Covid vaccines for every citizen.

However, the above view was subsequently changed. On December 02, 2020, quoting Union Health Ministry of India, it was reported, ‘the Government has never spoken about vaccinating the entire country.’ The Director General of the Indian Council of Medical Research (ICMR) said, “the Indian government is of the opinion that vaccination against the deadly pandemic may be needed only to the extent of ‘breaking the chain.’ If we’re able to vaccinate a critical mass of people and break virus transmission, then we may not have to vaccinate the entire population.”

Why the PM saidCovid vaccines for every citizen’ at that time?

In my view, what the PM said made perfect sense at that time. This is also vindicated by a fact-based interesting discussion in The Wire on July 16, 2020, carrying a title – ‘How Effective Does a Vaccine Need to Be to Stop the Pandemic? It quoted an in-depth study concluding, “a vaccine with an efficacy as low as 60% could still stop the pandemic and allow society to return to normal. However, most, if not all of the population would have to be vaccinated.”

This research article, titled ‘Vaccine Efficacy Needed for a COVID-19 Coronavirus Vaccine to Prevent or Stop an Epidemic as the Sole Intervention,’ was published in The American Journal of Preventive Medicine (AJPM) on July 15, 2020. The study found that the vaccine has to have an efficacy of at least 70% to prevent an epidemic and of at least 80% to largely extinguish an epidemic without any other measures (e.g., social distancing).

The PM’s observation will make even better sense, while taking into account the draft ‘Regulatory Guidelines for Development of Vaccines with Special Consideration for Covid-19 vaccine in India. This guidance document for vaccine developers was issued by the Central Drugs Standard Control Organization (CDSCO), and was reported by the media on September 23, 2020. It also says, among other specifics, a COVID-19 vaccine candidate should show at least 50 per cent efficacy during phase III of clinical trials for it to be widely deployed.”

Why health ministry’s current plan of not vaccinating all, also makes sense:

Indian Health Ministry’s latest assessment that vaccination against the deadly pandemic may be needed only to the extent of ‘breaking the chain,’ also makes sense in the rapidly emerging contemporary scenario.

It makes sense, considering, even the World Health Organization (WHO) experts have, reportedlypointed to a 65%-70% vaccine coverage rate as sufficient to reach population immunity, based on scientific reasons. This raises the subsequent question of who in India will get priority for vaccination.

The priority group for Covid vaccination in India:

As reported on November 26, 2020, according to the Principal Scientific Advisor of India, about 300 million people will be part of the first ‘wave’ to receive Covid vaccines in India. This number includes, health care workers, totaling 30 million, police personnel and those above 50 and those younger with underlying illnesses that make them vulnerable. However, everything in this area doesn’t seem to be as clear or straight forward as is widely expected. India’s Covid vaccination plan still seems to be a work in progress.

India’s Covid vaccine plan is still a work in progress:

This is evident from many reports, such as one of December 01, 2020. This report says, experts still believe that the government should spell out whether the vaccination should be confined to only uninfected individuals or encompass everyone. These reports may vindicate the murmur in the corridors of power that many details of Covid vaccination in India are yet to crystallize.

Let me quote the Indian Prime Minister in this regard, as he is not only the head of the current Government, but is also the national voice on all contemporary issues in the external world.

Interestingly, on November 24, the Prime Minister himself acknowledged: ‘Will go by scientific advice on Covid vaccine, don’t have many answers yet.’ He made it clear that he did not yet have answers to:

  • Vaccine dosage
  • Pricing or sourcing

Although, his Government has been in touch with local and global vaccine developers, nations and multilateral institutions to ensure vaccine procurement, the PM added.

Curiously, unlike what the Principal Scientific Advisor of India, reportedly articulated on November 26, 2020, just a couple of days before that, on November 24, 2020, the PM has put it quite differently.He then said, priority groups for vaccine administration would be fixed based on state inputs and added that additional cold storage must be created by states. These confirm, India’s final plan on Covid vaccination is still a work in progress.

The Covid vaccination plan is still evolving in India:

Interestingly, on December 04, 2020, in an all-party meeting chaired by the Prime Minister, it was further announced - the first set to receive the Covid -19 vaccine will be about one Crore frontline health workers and the next will be two Crore armed forces, police, and municipal personnel. Besides, around 27 Crore senior citizens, too, would be receiving the vaccine. Thus, the Government’s vaccination plan seems to be still evolving. Meanwhile, something sensational happened in the global race for having a Covid vaccine for a country’s population.

Curiously, much before the commencement of Covid vaccine prioritization discussion in India, on September 14, 2020, it was reported that China is also not going for its entire population. They are prioritizing frontline workers and high-risk populations in its fight against the new Coronavirus.

The first emergency-use authorization for a Covid-19 vaccine happened:

On December 02, 2020, both the local and global media, such as The Wall Street Journal (WSJ) reported: ‘The U.K. became the first Western nation to grant emergency-use authorization for a Covid-19 vaccine, clearing a shot developed by Pfizer Inc. of the U.S. and BioNTech SE of Germany to be distributed in limited numbers within days.’

In the war against Covid pandemic, it also marks a key milestone in efforts to translate a promising new vaccine technology into a widely available shot, the report highlighted. It was developed, tested and authorized and is now poised to be distributed amid a pandemic that has sickened tens of millions of people and killed more than 1.4 million around the world, the news article added.

Interestingly, the U.K could make it happen, even before the United States, where this vaccine is now being reviewed by the USFDA, where a similar authorization could come later this month and a rollout before the end of the year. It’s noteworthy that the USFDA Commissioner has defended the pace of review of Pfizer’s COVID-19 vaccine on the grounds that a thorough assessment is needed to reassure a skeptical public.

NIAID director of the US also believes so, and has claimed, “We have the gold standard of a regulatory approach with the FDA.” This brings us to the question – will Pfizer’s Covid vaccine be available in India soon?

Will Pfizer’s Covid vaccine be available in India soon?

Just a day after U.K’s emergency approval of Pfizer’s Covid vaccine to be rolled out to the public early next week, Pfizer, reportedly, said, the Company is in discussions with many governments around the world, and “… will supply this vaccine only through government contracts based on agreements with respective government authorities and following regulatory authorization or approval.”

However, as reported on December 06, 2020, Pfizer has now sought approval from the DCGI for emergency use authorization of its Coronavirus vaccine. In its application dated December 4, Pfizer India has sought approval to “import the vaccine for sale and distribution in the country, besides waiver of clinical trials on Indian population in accordance with the special provisions under the New Drugs and Clinical Trials Rules, 2019.”

It’s worth noting, conducting Phase III clinical trials on Indian volunteers has, so far, been a pre-requisite for the DCGI to give authorization to a particular investigational Covid vaccine. For example, AstraZeneca-Oxford vaccine is, reportedly being tested in a phase-3 trial on over 1,600 subjects in India by Serum Institute. So is the Sputnik V, developed by Russia, and touted as the world’s “first registered Covid-19 vaccine” after it received Russian regulatory approval in early August 2020.

Further, the head of the Indian National Task Force on COVID-19, had also said the arrival of the Pfizer vaccine in India might take some months. This is, reportedly for two reasons. One, the vaccine has stringent temperature requirements (-75 degree Celsius), which make it unviable for the current cold-chain logistics in India. And the second, could possibly be, its Indian clinical trial requirements, as has been the practice of even Russia approved Sputnik V vaccine.

Thus, it appears, India is now looking at the vaccines being developed by Oxford-AstraZeneca or Bharat Biotech against the pandemic, as these are expected to complete clinical trials and seek a regulatory approval at an early date.

Upsides and unknowns of the current status of Covid vaccines in India:

Along the obvious upsides, such as – not all in the country needs to be vaccinated and, at least, one Covid vaccine is widely expected to come shortly that is being manufactured in India, there are several critical unknown factors, too. For example, apace with several similar articles, the research paper titled, ‘Will covid-19 vaccines save lives? Current trials aren’t designed to tell us,’ published in The BMJ on October 21, 2020, also raised this issue.

It pointed out: “Ideally, you want an antiviral vaccine to do two things . . . first, reduce the likelihood you will get severely ill and go to the hospital, and two, prevent infection and therefore interrupt disease transmission.” Yet the current phase III trials are not actually set up to prove either, it emphasized. None of the trials currently underway are designed to detect a reduction in any serious outcome, such as hospital admissions, use of intensive care, or deaths. Nor are the vaccines being studied to determine whether they can interrupt transmission of the virus.

Conclusion: 

As of December 06, 2020 morning, India recorded a staggering figure of 9,644,529 of new Coronavirus cases with 140,216 deaths. The threat of subsequent waves for further spread of Covid infection now looms large in many states. The Prime Minister of India is also intimately involved in search of a meaningful solution to end the pandemic.

In this scenario, that a Covid vaccine is coming so soon, is a very good news, undoubtedly. There are several obvious upsides of this development, alongside many critical unknown areas, including how long the immunity will last after administration of a Covid vaccine. Incidentally, ‘Moderna vaccine-induced antibodies last for 3 months’ says NIAID study. Even in India a ‘Minister tested positive after the first dose of vaccine.

I am sure, the right answers will surface as the research will progress. Meanwhile, there doesn’t seem to be any other alternative sans vaccines, to kick start the globalized world – for a holistic and inclusive long-term progress, economic prosperity and, if not survival with dignity, for all.

By: Tapan J. Ray     

Disclaimer: The views/opinions expressed in this article are entirely my own, written in my individual and personal capacity. I do not represent any other person or organization for this opinion.

Combating Covid Pandemic: When ‘Something Is Better Than Nothing’

As the new Coronavirus overwhelms the world, since its global outbreak, up until November 29, 2020, over 1,458,305 people have died from this pandemic. Understandably, the Governments in all countries are frantically searching for some robust remedial measures to prevent these unfortunate deaths, besides protecting livelihoods of a vast majority of people.

For this purpose, experts considered effective preventive measures, such as vaccines could help taming this menace, alongside existing personal prevention measures. Accordingly, scientists around the world, have are hard to accelerate development and manufacturing of safe and effective Covod-19 vaccines, within the prescribed guidelines. Equally important is the fact these vaccines must be safe with predictable effectiveness- for all age groups.

The good news is, vaccines are now a distinct possibility in the near future, with the positive interim Phase III clinical trial reports pouring in. It gets reflected in the remark of the Director General of the World Health Organization (WHO), on November 23, 2020, at the media briefing on Covid-19. He said: There is now real hope that vaccines – in combination with other tried and tested public health measures – will help to end the pandemic.

Interestingly, amid these reports, a lurking fear of many experts also surfaces – on the impact of possible side effects, that Covid vaccine may cause, besides their medium to long term efficacy in human subjects. But, with the mounting number of deaths, near collapse of the global economy, including India, there isn’t any more time to watch and wait.

Apparently, all governments now want some scientifically relevant vaccines, instead of nothing. This article will deliberate on the one hand – an unprecedented achievement, alongside some critical concerns – voiced even by the Indian Prime Minister. Let me begin with the apprehensions, as expressed by some domain experts on some rough edges, as it were, in the process of its development.

Queries on vaccine dosing, efficacy, safety and testing:

On November 23, 2020, AstraZeneca and Oxford reported interim results of their vaccine with the average efficacy of 70% prevention. This sounded good to many, as it falls within the expectations of above a 50% standard that the FDA had set for Covid vaccines. However, the puzzling part in this result was – bigger (standard) doses of the vaccines were less efficacious. The vaccine was only 62% effective in a group that got two full doses spaced about a month apart. But among about 2,700 people who got a half-dose followed by a full, the number rose to 90%, the report highlighted. This incident prompted several questions about the most effective dose of AstraZeneca and Oxford vaccine, including its safety record and the approach to testing. Consequently, apprehensions surfaced whether the Drug regulators will clear it, based on the currently available data.

It now appears, AstraZeneca ‘s Covid-19 vaccine is ‘headed for an additional global trial as the drug maker tries to clear up the uncertainty and confusion surrounding favorable results in its current study.’ Incidentally, in India - AstraZeneca and Oxford vaccine will be manufactured by Pune-based Serum Institute of India (SII) under a collaborative arrangement. Let me now dwell on a broader as aspect in this space.

Could current Covid vaccines become useless in the future?

There isn’t an iota of doubt that developing Covid vaccine in ten months, which otherwise takes around ten years – is an unprecedented achievement. However, there are several other important areas in this space, where pundits have expressed uneasiness through various articles.

One such paper is titled, ‘Don’t rush to deploy COVID-19 vaccines and drugs without sufficient safety guarantees,’ published in the Nature on March 16, 2020. According to the author, a critical point in this regard is to consider ‘the potential for emerging and re-emerging Coronaviruses to cause future outbreaks.’

This is because, ‘the virus behind COVID-19 might mutate in ways that would make previously effective vaccines and antivirals useless.’ Testing vaccines and medicines without taking the time to fully understand safety risks, could bring unwarranted setbacks during the current pandemic, and into the future. ‘Despite the genuine need for urgency, the old saying holds – ‘measure twice, cut once’, the author commented.

The article concluded by suggesting, ‘any regulatory agency considering ways to accelerate treatments into testing should also weigh up how likely these drugs are to work beyond this particular Coronavirus.’ Moreover, according to the WHO, it’s too early to know if COVID-19 vaccines will provide long-term protection.

Possible side-effects of COVID-19 vaccines:

As people’s hopes swell, expecting Covid vaccines to ultimately end the deadly global pandemic, experts caution about their reported – annoying and unpleasant side effects. The November 12, 2020 paper – ‘Time to Discuss Potentially Unpleasant Side Effects of COVID Shots? Scientists Say Yes,’ published by the Kaiser Health News (KHN), also articulated similar apprehension.

It said, most Covid vaccines, including much publicized ones from Pfizer and Moderna, will require two doses to work, injections that must be given weeks apart, as company protocols show. Scientists anticipate the shots will cause enervating flu-like side effects — including sore arms, muscle aches and fever — that could last days and temporarily sideline some people from work or school.

Even with the Pfizer vaccine, which is touted to be over 90% effective, 1 in 10 recipients would still be vulnerable. There could also be a possibility that a vaccine may not suit everyone due to side-effects, especially the most vulnerable elderly population. That means, at least in the short term, as population-level immunity grows, people can’t stop social distancing and throw away their masks, the report emphasized. Even Prime Minister Modi has informed the nation about possible side effects of Covid vaccines.

PM Modi also warns of possible vaccine side-effects:

Being adequately briefed on the above perspectives related to Covid vaccines, the PM has also warned the nation about the possible side-effects. This is probably to ensure that the unpleasant experience of side-effects, after being administered the first dose, do not catch the population off-guard. Mostly because, no one should miss the second dose of vaccine for the same.

He said, during a recent video conference with the state chief ministers, ‘like many other popular medicines, any COVID-19 vaccine could lead to side-effects in some people.’ Emphasizing that both speed and safety are equally important in launching a vaccine, he assured that ‘the government would only go by science in finalizing a vaccine for the country.’

Is something better than nothing?

In the current situation, it appears so, as there is no other alternatives, except maintenance of social distancing, frequent hand sanitizing and wearing masks while outdoors. The Prime Minister also articulated sans any ambiguity: ‘Whatever vaccine makes it through the world’s certified processes, we will have to accept them and move ahead.’

In the meantime, he urged the states to keep distribution infrastructure, such as cold storages ready, the report said. Interestingly, according to Serum Institute CEO Adar Poonawalla, India could approve the emergency use of the Oxford-AstraZeneca COVID-19 vaccine by December 2020.

That said, for mass vaccination of the population across India, another factor that is extremely important to decide which vaccine to go for – is the required storage temperature of various Covid Vaccines under development.

Required cold chain storage temperature of various Covid vaccines:

Required cold chain storage temperatures of various Covid vaccines are as follows:

Company

Type

Doses

Effectiveness*

Storage

Oxford-AstraZeneca Viral Vector (genetically modified virus) Two 62-90%** Regular fridge temp.
Moderna RNA (part of virus genetic code) Two 95% -20C up to six months
Pfizer-BioNTech RNA Two 95% -70C
Gamaleya (Sputnik V) Viral Vector Two 92% Regular fridge temp.

Source: Respective Companies, WHO – BBC News. *Preliminary Phase III results. **Two full doses: 62%, A half dose followed by a full dose: 90%, Average: 70%

From the above table, it appears, from the perspective of continuous cold chain storage facility of vaccines – till these are administered to each person, Oxford-AstraZeneca and Russian Sputnik vaccines will be more practical, despite issues with them. Viewing from this perspective, as well, it appears ‘something is better than nothing’ term can be applied in this area, as well.

Conclusion:

The Covid pandemic continues to worry India, immensely. As on November 29, 2020 morning, India recorded a staggering figure of 9,393,039 of Coronavirus cases with 136,733 deaths. The threat of subsequent waves for further spread of Covid infection now looms large in many states.

Unprecedented speed in developing vaccines to effectively combat Covid Pandemic has created some initial issues. Some of these Covid vaccine challenges include, vaccine side effects, its future usefulness, or challenges towards maintaining required stringent cold chain storage requirements, especially in a country like India. Powder version of Covid vaccines, in the future, would possibly resolve this issue for all countries, across the world.

Currently, in tandem with keeping the cold-chain distribution infrastructure ready, at least, for vaccines that require regular fridge temperature, there is a need to make people aware of Covid vaccine side-effects. Otherwise, after getting first shot of a Coronavirus vaccine, many people may get so scared of its side effects that they may not come back for the second dose. If this happens, the very purpose of mass vaccination will get defeated.

However, from the Indian perspective, Covid vaccines that the country, hopefully, will shortly get, may not be the best, out of the available ones, in terms of safety and efficacy. But, for combating Covid Pandemic across India at this juncture, I reckon, the good old dictum still holds good – ‘something is better than nothing.’

By: Tapan J. Ray     

Disclaimer: The views/opinions expressed in this article are entirely my own, written in my individual and personal capacity. I do not represent any other person or organization for this opinion.