The brazen manner in which the crimes were committed is unusual - both thefts took place during the middle of the day when the hospital would have been extremely busy and no attempt appears to have been made to disguise what was happening.
It is particularly shocking that on both occasions the offenders targeted elderly patients while they were in the process of receiving medical care.
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Two members of the public were injured along with two police officers who were in the unmarked vehicle.
Scotland Yard recorded 1,235 Islamophobic attacks in the last 12 months, compared with 811 in 2015.
Officers say the child, aged two, was targeted in the Lewisham Shopping Centre.