Professor Nair’s research focuses on child pneumonia. He has received over £49 million (£45 million as PI / Work Package Leader) in grant funding from the Innovative Medicines Initiative, Bill and Melinda Gates Foundation, NIHR, World Health Organisation, UNICEF and Sanofi Pasteur.

He has led studies that reported the first and most widely cited disease burden estimates for RSV, influenza and human metapneumovirus related child pneumonia. The updated current estimates are regarded as the most comprehensive and respected in the field. Apart from his main interest in child pneumonia epidemiology, he has a strong interest in refugee health and gender inequities in child health and has contributed to internationally leading research on neonatal health, maternal health and health sector reforms.