Not only is that factually incorrect as the other user pointed out, but you may be surprised that more than half of the worlds population lives in this circle (https://i.imgur.com/CK6aONG.jpg), so the fact that a lot of diseases originate there isn't as surprising as you might think.

Not to mention that diseases can break out everywhere, making the response to a pandemic significantly more important than trying to shift blame for what is essentially a game of chance.