Food and medicine shortage in Cuba is an unavoidable impact of the pandemic, no matter the measures imposed, for an obvious reason both you and I know - tourism is the only real avenue for Cuba to accumulate foreign currency.

Certainly the economy took a hit, and this is true everywhere in the world, but starvation? I'd like to see a source for that, as you haven't provided any. Typically, what happens in situations where island countries cannot acquire foreign currency, is that they cannot import specialty foods, and have to rely on local, low-quality and repetitive sources of nutrition. But it is very unlikely for actual starvation to happen.