Which country has become the First country in the World to introduce WHO approved typhoid vaccine:

🧠 Explanation:

Pakistan was the first country to introduce a WHO-approved typhoid vaccine. Knowing this helps students and health enthusiasts understand public health milestones. This vaccine is key for studying health or biology in school. Learning this helps with projects or exploring health policies. It’s useful for biology classes, ensuring clarity in academic work or general knowledge about vaccinations.