**Background:** The COVID-19 pandemic has disproportionately affected vulnerable populations, with evidence from past crises showing women and children are especially vulnerable through reduced access to antenatal care, immunizations, and schooling. Early modeled estimates predicted 253,500–1,157,000 additional child deaths and 12,200–56,700 additional maternal deaths within one year globally. However, most studies in low- and middle-income countries have been limited to small settings or early pandemic data. This study aimed to assess actual disruption in essential health services across six South Asian countries using administrative data through June 2021, and model the downstream consequences on mortality, education, and adolescent health.
**Methods:** The researchers collaborated with UNICEF Regional Office for South Asia to collect data from Health Management Information Systems (HMIS) in Afghanistan, Bangladesh, Nepal, India, Pakistan, and Sri Lanka. Data covered essential sexual, reproductive, maternal, neonatal, and child health (SRMNCH) service utilization from January 2019 to June 2021. Disruption was assessed by comparing quarterly service utilization in 2020 and 2021 against the same calendar months in 2019. The Lives Saved Tool (LiST) and FamPlan modules of Spectrum were used to estimate increases in under-5 child mortality, maternal mortality, stillbirths, and unintended pregnancies. For Pakistan only, monthly district-level data from 150+ districts allowed calculation of 95% confidence intervals. Educational impact was modeled using population estimates from UNESCO, net attendance ratios from DHS, and school dropout rates adapted from the 1997 East Asian financial crisis in Indonesia. Economic costs were estimated using returns to education of 4.04% per primary year and 2.44% per secondary year, with a 3% discount rate over 45-year working lifetimes.
**Key Results:** Coverage of essential SRMNCH services decreased by up to 60%, with the largest disruptions observed between April and June 2020. Bangladesh and Pakistan experienced the most disruption; Sri Lanka the least. Recovery occurred from July 2020 to March 2021, but most gains were reversed in April/May 2021 during the delta variant surge. Estimated additional deaths between January 2020 and June 2021 included: 317,000 child deaths (13% increase overall; India 15%, Pakistan 12%), with over 150,000 in the neonatal period (14.6% increase); 150,000 additional stillbirths (10.8% increase; India 13%, Pakistan 10%); and 19,000 maternal deaths (18.7% increase; India 23%, Pakistan 18%). More than 5.4 million additional unintended pregnancies occurred, with approximately 5.0 million in India. Prolonged school closures resulted in an estimated 9.4 million children permanently dropping out (7.5 million in India), with 4.5 million being girls. This cohort faces 15–30% decreased lifetime earnings. Among girls who dropped out, an estimated 476,587–498,250 additional adolescent pregnancies could occur, leading to 769–804 maternal deaths, 13,514–14,128 neonatal deaths, 153,195–160,159 low birthweight births, and 27,937–29,207 stunted children by age two. The indirect mortality effects likely exceeded direct COVID-19 deaths in South Asia.
**Clinical Implications:** The study demonstrates that pandemic response measures caused greater harm to women and children through indirect effects than the direct effects of COVID-19 itself. Coverage of essential services remained below pre-pandemic levels even by March 2021, with further setbacks during the delta wave. The findings underscore the critical need for continued provision of essential SRMNCH services and keeping schools open during future health emergencies. Strategies must address inequities through targeted implementation reaching marginalized groups, including zero-dose children. Building back better requires increased investments in health systems, poverty alleviation, education, and gender equity. The vast inequities in global COVID-19 vaccine rollout (only 15% in low-income countries vs 72% in high-income countries by April 2022) highlight systemic vulnerabilities that must be addressed for future pandemic preparedness.