Systemic gaps in maternal vaccination leave later-born children vulnerable: How birth order and healthcare access shape immunity disparities
Original framing: “Babies with older siblings have a higher infection risk, but are less protected through vaccination” — The Conversation - Global
Rural women, refugees, and low-income mothers are systematically excluded from maternal vaccination programs due to cost, distance, and discrimination in healthcare settings. In the U.S., Black and Indigenous women face vaccination rates 20–30% lower than white women, reflecting historical medical racism and present-day healthcare deserts. Their exclusion from policy discussions ensures that solutions remain technocratic rather than transformative, perpetuating the cycle of vulnerability.
The study’s findings are not about older siblings as vectors but about a healthcare system that treats reproduction as a private burden rather than a public good. In the U.S.
, Black women are 3 times more likely to experience maternal mortality in later pregnancies, a statistic that mirrors the vaccination gaps but is rooted in medical racism and the defunding of community clinics post-2008. Globally, the pattern repeats: countries with universal healthcare (e.g., Sweden) show no birth-order immunity gaps, while those with privatized systems (e.g., India, Nigeria) see later-born children disproportionately affected. The solution lies in dismantling the neoliberal myth that healthcare is a commodity, replacing it with a model where immunity is a collective inheritance—protected by policy, not blamed on biology. This requires reparative investment in marginalized communities, the revival of Indigenous care systems, and a reckoning with how colonialism and climate change intersect to create generational health debts.