# National COVID-19 Vaccination Programme

> India's national COVID-19 vaccination programme for NEET-PG PSM: 16 January 2021 phased rollout, Co-WIN, Covishield, Covaxin and precaution dose.

- Canonical URL: https://prepelephant.com/topics/neet-pg/community-medicine/national-covid-vaccination-programme
- Exam / course: NEET-PG · Subject: Community Medicine
- Publisher: PrepElephant (https://prepelephant.com) — Prepared and reviewed by the PrepElephant Academic Review Team
- First published: 2026-10-02
- Last updated: 2026-10-02
- How to cite: "National COVID-19 Vaccination Programme", PrepElephant, https://prepelephant.com/topics/neet-pg/community-medicine/national-covid-vaccination-programme

## Direct answer

The National COVID-19 Vaccination Programme, the largest immunisation drive any country has mounted, opened on 16 January 2021 with healthcare workers receiving Covishield and Covaxin, then widened phase by phase — frontline workers from 2 February, citizens above 60 and above 45 with comorbidities from 1 March, everyone above 45 from 1 April, and all adults from 1 May 2021, with free vaccination at government centres from 21 June 2021. The National Expert Group on Vaccine Administration (NEGVAC) steered prioritisation, the Co-WIN digital platform managed registration, scheduling and certificates, and vaccine types spanned the adenoviral-vector Covishield, the whole-virion inactivated Covaxin, later joined by Sputnik V, the protein-subunit Corbevax and Covovax and others. Children entered in stages (15-18 from January 2022, 12-14 from March 2022 with Corbevax), and precaution doses began on 10 January 2022 before extending to all adults with the interval later set at six months; cumulative dosing has crossed 220 crore.

## What you must remember

- **Phased prioritisation logic:** mortality-risk ordering — healthcare workers (16 January 2021), frontline workers (2 February), 60+ and 45+ with 20 specified comorbidities (1 March), all 45+ (1 April), all 18+ (1 May); children 15-18 (3 January 2022), then 12-14 (16 March 2022).
- **Vaccine platform map:** Covishield (Oxford-AstraZeneca chimpanzee adenovirus vector, Serum Institute), Covaxin (whole-virion inactivated with adjuvant, Bharat Biotech), Sputnik V (two-component adenovirus vector), Corbevax (recombinant protein subunit), Covovax (nanoparticle subunit).
- **Regimens:** two intramuscular doses; the Covishield interval was widened (4-8 weeks, later up to 12-16 weeks) to optimise immune response amid supply constraints; homologous and later heterologous precaution doses were permitted.
- **Precaution dose:** began 10 January 2022 for healthcare workers, frontline workers and citizens above 60 with comorbidity choice; extended to all adults above 18 from April 2022; interval subsequently set at six months.
- **Digital backbone:** Co-WIN for registration, session management and verifiable certificates; AEFI surveillance scaled alongside; U-WIN later reused the architecture.
- **Free-of-cost milestone:** 21 June 2021 unified government provision free at all public centres while private centres charged a capped rate.
- **Last-mile drive:** Har Ghar Dastak (November 2021) sent teams door-to-door for first- and second-dose completion — the programme's answer to dose drop-out.

## How the phase logic was built

Read the sequence as an applied ethics-and-epidemiology exercise. NEGVAC, constituted in 2020 before any vaccine was approved, had to allocate scarcity: healthcare workers first both because they faced the highest exposure and because losing them crippled the pandemic response; age and comorbidity came next because infection fatality climbed steeply with both; essential frontline workers preceded the general adult population; and 18-44-year-olds, last in line, were reached once supplies of multiple manufacturers scaled. The 21 June 2021 decision to make all government vaccination free removed cost as a barrier exactly when the second-wave experience had damaged confidence, and Har Ghar Dastak converted static session sites into household outreach when coverage data showed wide first-to-second-dose gaps. Paediatric staging followed the same logic in miniature — adolescents first, then younger children.

Two design features deserve articulation: Co-WIN's real-time dashboards let districts see dose gaps by age band and act within days, an administrative capacity India had never had at this scale; and the AEFI reporting pathway handled vector-vaccine thrombosis concerns through documented causality review rather than ad-hoc withdrawal.

## Where students slip

Dates are the commonest casualties: 16 January 2021 (launch), 16 January 2022 (precaution dose, exactly a year later — an easy pair to confuse), 21 June 2021 (free vaccination). The second slip is platform identity — Corbevax and Covovax are subunit vaccines, Covaxin is inactivated whole virus, Covishield is a viral vector — and mixing them up wrecks the "which type" one-liner. Third, "precaution dose" was India's deliberate terminology, not "booster", a vocabulary point examiners enjoy. Finally, it ran parallel to the UIP on borrowed strengths — cold chain, AEFI systems, session-day culture — with Co-WIN added, a distinction that matters when a question asks what infrastructure the drive actually reused.

## Frequently asked questions

### Which groups received COVID-19 vaccine first in India?

Healthcare workers from 16 January 2021, followed by frontline workers from 2 February, then citizens above 60 and 45-plus with comorbidities from 1 March, in strict mortality-risk order.

### How do Covishield and Covaxin differ in platform?

Covishield uses a chimpanzee adenovirus vector carrying the spike gene, while Covaxin is a whole-virion inactivated vaccine adjuvanted with a gel combining alum and a TLR7/8 agonist.

### When did precaution doses begin and for whom?

From 10 January 2022 for healthcare workers, frontline workers and citizens above 60 with comorbidities, extended to all adults from April 2022 with a six-month interval after the primary series.

### What role did Co-WIN play in the programme?

Digital registration, appointment and session management, dose tracking, and verifiable certificates, whose dashboards also drove micro-planning and the Har Ghar Dastak catch-up campaigns.

### What was Har Ghar Dastak?

The November 2021 doorstep vaccination drive sending teams to households to complete first and second doses among the hesitant and the left-out, closing coverage gaps district by district.