[2] Early in his career in India, he was posted in the medical research department and posted in Central Malaria Bureau at Kasauli (later Central Research Institute, Kasauli), where he worked under Rickard Christophers and John Alexander Sinton, both accomplished Malariologists.

[4] During his tenure in India, he supervised some of the first of systematic epidemiological surveys of Malaria in several urban and rural areas in different parts of the country including relatively remote areas in Wayanad district, Andaman and Nicobar Islands, coastal regions of Odisha, northern parts of Sindh, urban locations in Mumbai, Kolkata and Delhi.

[7] In a subsequent substantive account he published all known details of 137 species of Anopheles then known throughout the world with notes on their distribution, breeding and behaviour of all these.

[10] He was a proponent for a careful study of entomology, Anopheles species distribution and biting behaviour of the mosquito vector in determining success of disease control efforts and urged for looking beyond use of DDT and insecticides only in malaria eradication.

[11] In 1952, he was invited by the then imperial government Ethiopia to study the malaria situation in southern part of the country around Lake Tana.

[3] He noted the relatively better-off quality and systematic nature of training efforts for malaria eradication organised by the Malaria Institute of India and tried to organise training for senior leadership of the disease control efforts in Bangladesh and Pakistan, but this did not occur due to political reasons[3] He also worked on Rabies and studied endemic typhus in the Himalayan foothills.

[16] The American Society of Tropical Medicine and Hygiene awarded the Walter Reed Medal to him on November 4, 1960 in absentia[17].