A recent study published in The Lancet journal has highlighted a concerning statistic regarding global childhood vaccinations: as of 2023, India is one of eight countries where more than half of the world’s unvaccinated children live. This alarming finding comes from a collaborative effort of international researchers under the ‘Global Burden of Disease (GBD) 2023 Vaccine Coverage Collaborators,’ who analyzed routine childhood vaccine coverage data for 204 countries and territories spanning from 1980 to 2023. The research indicated that, of the 15.7 million children worldwide who received no doses of the diphtheria, tetanus, and pertussis vaccines in their first year of life, 1.44 million are in India.
Historically, in 1980, a staggering 53.5 percent of children who had never received routine vaccinations resided in just five countries, including India, China, Indonesia, Pakistan, and Bangladesh. Dr. Jonathan Mosser from the Institute for Health Metrics and Evaluation at the University of Washington, who contributed to the study, noted that although there have been monumental efforts over the past fifty years to increase vaccination coverage, the progress has not been universal.
Factors such as persistent global inequalities, challenges stemming from the COVID-19 pandemic, and the rise of vaccine misinformation and hesitancy have severely hampered immunization efforts, increasing the risk of preventable outbreaks of diseases like measles, polio, and diphtheria.
The study has underscored the critical need for targeted interventions to improve vaccination rates, ensuring that all children can gain access to life-saving immunizations. Throughout the decades from 1980 to 2023, vaccine coverage has overall doubled against several diseases. Despite achieving a significant reduction in the number of “zero-dose” children—those who have never received a routine childhood vaccine—from 58.8 million in 1980 to 14.7 million in 2019, progress has notably stalled or even reversed in numerous countries in recent years.
Between 2010 and 2019, immunization rates for measles declined in 100 out of 204 nations, with 21 high-income countries reporting a decrease in coverage for at least one vaccine against diphtheria, tetanus, whooping cough, measles, polio, or tuberculosis. The researchers stress that accelerated progress is essential to achieve the 2030 target of halving the number of zero-dose children compared to 2019 levels; however, as of 2023, only 18 of the 204 countries and territories have already met this ambitious goal.
Two-thirds of the children who have never received a vaccination dose yet need to be vaccinated from 2023 to 2030 are concentrated in sub-Saharan Africa and South Asia. This highlights an alarming inequity in vaccination distribution worldwide. The authors of the study emphasize that, as of 2023, over half of the 15.7 million global zero-dose children inhabit just eight countries, reinforcing the importance of addressing these persistent challenges in global health equity.
-Raja Aditya
