A crucial part of India's fight against second Covid-19 wave is vaccination. The country has an uphill task to inoculate about 850 million (85 crore) people over the age of 18. It means India will require 1.7 billion vaccines to inoculate the entire lot under the current phase 3. The government has said India will produce a total of 126 crore vaccines between August-December. Over 35.6 crore doses have been either procured or are in the process of procurement. However, the current vaccine makers Serum Institute – the biggest in the world – and Bharat Biotech alone won't be able to meet the demand.