There is an old small white house standing between the Cornwall Street Substation and the exit of Ede Road. Google map shows nothing at that site but when checking the map of 1967, it was a Malaria Store.
There isn’t a full list of every “Malaria Prevention Store” built in the 1930s, but here’s what’s known: The Malaria Bureau was set up in 1930 at the Bacteriological Institute on Caine Lane, and these stores were built in malaria-prone areas like the New Territories, Happy Valley, and swampy zones near Taipo and Tolo Harbour to store anti-mosquito gear and chemicals. The exact number and locations aren’t detailed in the available records, but they were usually placed where outbreaks were common or mosquito breeding was a big problem.
The Malaria Prevention Store on Cornwall Street is one of several small, utilitarian buildings set up in the 1930s by the Malaria Bureau in areas prone to mosquito breeding, like Kowloon Tong. These stores were used to keep anti-mosquito chemicals and equipment handy for quick response to outbreaks.
The building is still in use by some street cleaners now that I observed. But exact function is unknown now.
