26 July, 2021

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Covid-19 Vaccination: Who Gets, When And How?

By Rohan Samarajiva

Prof. Rohan Samarajiva

Comments on the efficacy, risks, etc. of vaccines should be made by those with specialized knowledge on the subject. But those of us working at the intersection of economics, law and technology can make useful contributions as well.

Is vaccination a public good?

There is a limited stock of vaccines available in a country at a given time. A vial of vaccine is not a public good that cannot be sold for a price. One person getting a jab means there is one less for another. It can easily be given or denied. It is a private good that can be supplied through the market.

But vaccinations have strong positive externalities. The true benefits come to individuals (and countries) only when a significant majority of the population (or countries with which the country is interacting) are vaccinated. Benefits flow not only to the person receiving the vaccination, but to others in her environment. Vaccinations can be sold through the market, but it is better if at least some quantity is given away free to those who are hesitant to pay, so that “herd immunity” can be achieved quickly. In fact, if there is resistance to vaccination for whatever reason, additional inducements and penalties can be justified.

How should limited stocks be allocated?

For Sri Lanka’s current population of 22 million the government has assured supply at this moment for 300,000. A good argument can be made to give priority to frontline workers (health and other) who are most exposed to risks of infection. They are exposed by the nature of what they do for all of us. If they get sick, everyone suffers, not just them. There won’t be trained people who can care for the sick and bring the pandemic under control.    

Who is next in priority? Most societies would privilege those most at risk, who in the case of COVID-19 are the elderly with other illnesses (co-morbidities). The expected short duration of vaccine effectiveness makes this a relatively easy choice. 

Because COVID-19 is an influenza virus which continues to evolve, it is unlikely that any vaccine will give lifetime immunity. In fact, it appears that the inventors of the Pfizer BioNTech vaccine are already at work trying to respond to new variants. A case can also be made for giving the elderly with co-morbidities high priority because keeping them healthy reduces the strain on healthcare providers.

Those engaged in processing food perform essential functions. Infections in other countries show that such workers are facing high risks. Should they be next in priority after frontline health workers? What about those who work in close proximity in factories to keep the exports going? Without them, we may not have the resources to fight the pandemic.

What about persons such as politicians and religious functionaries who require extensive human interactions and are thus placed at some risk? They have a choice, and may be distinguished from frontline health workers who are compelled to expose themselves to risk. In many countries select high-profile persons in these categories have been vaccinated in media view as part of campaigns to persuade people to accept vaccination. 

Should it be possible to pay?   

The various vaccines that are being made available are priced from around USD 3 per jab (AstraZeneca-Oxford/Covishield) to USD 33 (Moderna). Bulk purchases by governments and programs such as Covax can make some vaccinations free of charge to citizens. Should those willing to pay be allowed to obtain vaccines on a parallel track?

For example, an export firm may be willing to spend its own funds to protect its workforce. As long as it does not disturb the priority list for free vaccines, is there any harm?

If vaccination for payment is acceptable for companies, why not for individuals? Those who wish to travel may require vaccines even if they do not fall within priority categories. It may be cleaner to allow them access to a payment-based option, than make case-by-case determinations on jumping the queue. Should the pay option be limited for those with cause as above, or simply open to anyone who is willing to pay?

This is how the Sri Lankan healthcare system works anyway. Those willing to pay can reach the specialists of their choice, technically with shorter waiting times, than those who go through the free channels in state hospitals. The same with hospital care. Those wanting the conveniences of attached bathrooms and TVs, can use private hospitals. The public and private options co-exist. Not perfect, but it works. And in conditions of resource constraint, it may be the sensible option if the free channel can be protected from encroachment by the pay option.  

The fears are that those who are connected or corrupt will get free vaccines, even if they are not on the priority list; or that vaccines obtained for the free channel will be diverted to the pay channel, allowing private providers to make excessive profits which will feed the corruption. The remedy is transparency. The COVID19 vaccine deployment plan should be made public as soon as possible. The records of those who are given the free vaccines along with details of eligibility should be open for review.

Vaccination and trust

Injecting one’s body with foreign substances requires trust in science and scientists. It is because vaccinations are risky that extensive trials are conducted, and rigorous approval procedures have been put in place. Government officials are instructed on how to communicate about vaccinations, specifically about the associated and unavoidable risks and unknowns.  Consistent messaging by credible spokespersons (ideally healthcare professionals, with subject expertise) as recommended by WHO research is necessary. LIRNEasia presented related work at the National Science Foundation COViD19 conference held on 27-28 January 2021.  

Some percentage of the populace is fearful of injections and untrusting of science. There are also those in the media who seek to profit by creating distrust, for example by peddling disinformation about microchips being injected along with the vaccines.  Stories about genes being altered are also in this category.  It is important that clear, science-based communication is used to counter these Infodemics.      

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Latest comments

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    Fingers crossed , I may be getting my shot (Astra Zeneca) tomorrow.

  • 2
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    Rohan Samarajiva

    Sil Redda Lalith Weeratunga says COVID 19 vaccine is not mandatory.
    Does he expect the people to buy it on Black Market?

  • 2
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    “A Health Ministry official on Saturday confirmed that Pavithra Wanniarachchi became the highest-ranking official to be infected with the virus. She and her immediate contacts have been asked to self-quarantine.”

    What happened to the Bauda Divine Syrup?

    “Health Minister Pavithra Wanniarachchi who was at the Hikkaduwa Intermediate Treatment Centre after being COVID-19 infected was transferred to the National Institute of Infectious Diseases (IDH) last evening.”

    they should have sent this nut case to ANGODA not IDH.

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