Much. Would've wiped out the island by now and half of Cuba without realizing he'd done so.
The tropical heat and humidity of Cuba make possible a flora of splendid richness.
Convincing evidence is offered by the qualities of the Spanish race in Cuba that white men of temperate lands can be perfectly acclimatized in this tropical island.
As for diseases, some common to Cuba and Europe are more frequent or severe in the island, others rarer or milder.
There are the usual malarial, bilious and intermittent fevers, and liver, stomach and intestinal complaints prevalent in tropical countries; but unhygienic living is, in Cuba as elsewhere, mainly responsible for their existence.