For starters, they don’t know what “vaccine” is, nor its equivalent in Swahili, “chanjo.” They only know of “ndui,” a Congolese Swahili term that refers to prenatal vaccines, Ellie Kemp, head of crisis response at Translators without Borders, told Devex.

“That’s the word they understand for vaccination, while men were more likely to understand the formal Swahili word for vaccination. But unless you know that and test the comprehension of some of these keywords … then you could miss out [a significant part of] the population,” she said.

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