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The diseases that you mention are of African origin and, when introduced into the New World, massacred the natives almost as efficiently as smallpox.

Africa is a huge cauldron of human pathogens, which is not that surprising, given that hominids developed there. As a rather tragic consequence, Africans were sought after as slaves, because they were resistent to many of the diseases that killed white or Amerindian indentured workers.

It was also a major reason for bringing in Africans slaves to work the fields, as they survived much longer that Europeans.

Yellow fever and malaria were brought to the New World by Europeans.