Microsoft co-founder Bill Gates visited Biological E Ltd, a city-based vaccine manufacturer, late in the evening on Thursday.
Gates who is also Co-Chair of the Bill and Melinda Gates Foundation, along with a delegation from the foundation met with the top management of Biological E Ltd.
Bill Gates congratulated Biological E on the science and innovation platform of the company that allows it to supply effective and affordable vaccines, a release said.
"Our company is committed to manufacturing quality vaccines at prices that make them one of the most cost-effective
Gates also visited the International Crops Research Institute for Semi-Arid Tropics (ICRISAT) at Patancheru and interacted with senior scientists for about five hours. His visit to ICRISAT was kept under wraps for security reasons.