If the latter, it is probably fake, as the IBM Selectric wasn't introduced until 1961, and it is difficult to envision it importation to this hospital in Kenya by 1964. Eventually, it achieved 75% of the US market, and so a forger would probably find a Selectric to use for the fake.
To me, the typed sections appear uniform, and thus likely produced by an electric golf ball typewriter, rather than the uneven result from a manual basket typewriter likely in use in Kenya in February 1964.
I believe it was a basket type. Notice that the upper case A is harder struck than its neighbors in each case. I don't think you'd get that from a Selectric or similar ball type where one striking mechanism is doing all letters.
Note the heavy periods and commas. Marks of a manual.