O'Brien's father was Edward O'Brien of the Bengal Civil Service. Aubrey O'Brien was educated at Dover College and at the Sandhurst. He served three and a half years in the Loyal North Lancashire Regiment, and one and a half years in the 110th Maratha Light Infantry before spending 29 years in the Punjab Commission.
He also remained the district judge as a Lieutenant at Bannu (then part of British India, now in Pakistan). On 9 November 1901 he was promoted to the rank of captain and appointed as the 1st Deputy Commissioner of the newly formed Mianwali District (then part of British India, now in Pakistan). He served Mianwali not once but thrice, second time in 1906 and third time in 1914. However he was promoted to the rank of major during his third tenure at Mianwali.
Serologic Responses to Measles, Mumps, and Rubella (MMR) Vaccine in Healthy Infants: Failure to Respond to Measles and Mumps Components May Influence Decisions on Timing of the Second Dose of MMR
Sep 01, 1998; Leslie Ann Mitchell PhD,1,2 Aubrey J. Tingle, MD, PhD,1 Diane Decarie, BSc,1 Carol Lajeunesse, BScN2 A B S T R A C T Measles,...