Answer : 2. "Ivory Coast"
Explanation :

Ivory Coast is the first country to deploy the R21 malaria vaccine developed by the Serum Institute of India and Oxford University. Authorized by multiple African countries, the vaccine aims to initially immunize 250,000 children, with plans to reach millions more with Gavi’s support. Recommended by WHO for children under five, the vaccine targets a disease responsible for over 600,000 deaths annually, predominantly in Africa.