How many employees work at Serum Institute of India?

Serum Institute of India Pvt Ltd. has 8,304 employees, according to Revelio Labs workforce intelligence data. The YoY growth rate is 4.6%.

Data source: Revelio Labs Coverage: Global workforce Latest update: September 2025

About Serum Institute of India

Serum Institute of India Pvt. Ltd. is now the world's largest vaccine manufacturer by number of doses produced and sold globally (more than 1.3 billion doses) which includes Polio vaccine as well as Diphtheria, Tetanus, Pertussis, Hib, BCG, r-Hepatitis B, Measles, Mumps and Rubella vaccines. It is estimated that about 65% of the children in the world receive at least one vaccine manufactured by Serum Institute. Vaccines manufactured by the Serum Institute are accredited by the World Health Organization, Geneva and are being used in around 170 countries across the globe in their national immunization programs, saving millions of lives throughout the world. Serum Institute of India is ranked as India's No. 1 biotechnology company, manufacturing highly specialized life saving biologicals like vaccines using cutting edge genetic and cell based technologies, antisera and other medical specialties. Serum Institute of India was founded in 1966 by Dr. Cyrus Poonawalla with the aim of manufacturing life-saving immuno-biologicals, which were in shortage in the country and imported at high prices. Thereafter, several life-saving biologicals were manufactured at prices affordable to the common man and in abundance, with the result that the country was made self-sufficient for Tetanus Anti-toxin and Anti-snake Venom serum, followed by DTP (Diphtheria, Tetanus and Pertussis) group of Vaccines and then later on MMR (Measles, Mumps and Rubella) group of vaccines. The Philanthropic philosophy of the company still not only exists but has been proliferated to bring down the prices of newer vaccines such as Hepatitis-B vaccine, Combination vaccine etc., so that not only Indian's, but the entire under-privileged children of the world are protected from birth onwards.

As of September 2025

Serum Institute of India
workforce metrics

Headcount

8.3k

Avg. Salary

$12.6k

Tenure

4.7yr

Growth Rate

4.6%

Hiring Rate

Attrition Rate

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Employee Headcount

Interactive chart of Serum Institute of India annual worldwide employee count from 2023 to 2025.

  • Serum Institute of India total number of employees in 2025 was 8,315.927, a 4.6% increase from 2024.
  • Serum Institute of India total number of employees in 2024 was 8,066.869, a 7.1% increase from 2023.
  • Serum Institute of India total number of employees in 2023 was 7,510.396, a 5.1% increase from 2022.

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Employee Geographic Breakdown

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Employee Role Breakdown

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Employee Compensation

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Active Job Postings

Interactive chart of Serum Institute of India annual active job postings from 2023 to 2025.

  • Serum Institute of India active job postings in 2025 was 24, a 96.8% decline from 2024.
  • Serum Institute of India active job postings in 2024 was 35, a 27.2% decline from 2023.
  • Serum Institute of India active job postings in 2023 was 46, a 128.6% increase from 2022.

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Employee Sentiment

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