Halal Concerns Drive Vaccine Hesitancy in Indonesia as Measles Cases Rise

Sumenep, Madura Island, Indonesia — Indonesia is facing a dangerous measles outbreak that has already infected more than 2,600 children and claimed at least 20 lives in Sumenep, East Java, this year. The situation is worsening as public health efforts collide with vaccine hesitancy, much of which is tied to concerns over the halal status of vaccines.

Religious Concerns Complicate Immunization

A major factor fueling hesitation among Muslim parents is the use of pig-derived gelatin in some measles vaccines. This gelatin is used as a stabilizer to preserve vaccine quality, but its origin has triggered doubts over religious permissibility.

In 2018, the Indonesian Ulema Council (MUI) declared such vaccines haram due to their ingredients, but at the same time issued a ruling that they could still be used temporarily in the absence of halal alternatives. The fatwa emphasized the Islamic legal principle of necessity, arguing that protecting life and preventing widespread illness must take precedence.

Despite this, many parents remain cautious or delay vaccinations, as uncertainty continues to circulate in communities. Health workers in Sumenep report that they frequently face questions from parents who ask whether vaccines are truly halal. Some parents choose to refuse immunization altogether, even during an outbreak, citing religious grounds.

Declining Vaccination Coverage

Indonesia’s measles immunization coverage has been falling in recent years. According to the Ministry of Health, coverage for measles-rubella vaccines dropped to 82.3% in 2024, well below the 95% threshold recommended by the World Health Organization to prevent outbreaks. This decline has left hundreds of thousands of children vulnerable, particularly in regions like Madura Island, where vaccine skepticism is strong.

The current outbreak has already pushed local hospitals to their limits. Medical staff are treating hundreds of cases, with many children requiring hospitalization for severe complications such as pneumonia and dehydration. Doctors warn that if immunization rates do not improve, measles could spread to other provinces.

In response, the Indonesian government launched an emergency vaccination campaign in August 2025, targeting more than 78,000 children between 9 months and 6 years old. Health workers are going door to door, holding school-based clinics, and setting up mobile vaccination posts in remote villages.

Religious leaders are also stepping in. Some clerics have begun publicly reminding parents that the MUI’s fatwa allows vaccines even if ingredients are not fully halal, stressing that protecting children’s lives is paramount. Public health experts argue that stronger collaboration between religious authorities and health officials is essential to rebuilding trust.

For many families, the issue is deeply personal. Some parents, like Ayu Resa Etika of Sumenep, initially hesitated to vaccinate their children due to halal concerns. But after witnessing neighbors’ children fall seriously ill, she chose to proceed with immunization. “I was worried about the ingredients, but I am more worried about losing my child to measles,” she said.

These stories highlight the growing tension between religious considerations and urgent health needs. While some families are gradually changing their minds, vaccine reluctance remains widespread enough to endanger herd immunity.

The Broader Challenge

Indonesia, home to the world’s largest Muslim population, has long faced challenges in balancing public health priorities with religious sensitivities. Similar concerns arose during the COVID-19 pandemic, when questions about vaccine halal status slowed initial rollouts until certified halal vaccines became available.

Experts say the long-term solution lies in developing vaccines that are fully halal-compliant, alongside transparent communication campaigns that address both scientific and religious concerns. Without these measures, Indonesia risks recurring outbreaks of preventable diseases, with children bearing the brunt of the consequences.

The measles outbreak in Sumenep is a stark reminder of how public health and religious belief intersect in complex ways. While halal concerns are valid for many Muslim families, the urgent need for vaccination is undeniable as the country battles rising infections and child fatalities. Unless trust is rebuilt and coverage improves, measles could continue to threaten lives across Indonesia.