Pneumosil is India’s first indigenously developed pneumococcal vaccine made by Pune-based Serum Institute of India (SII). The vaccine was developed via a decade-long collaboration with the health organisation PATH and the Bill and Melinda Gates Foundation. It targets the pneumococcal bacterium that causes pneumonia and other deadly diseases like meningitis and sepsis. This bacteria is estimated to cause nearly 4 lakh deaths of children under 5 across the globe.