In the not-so-distant past, being bitten by a mosquito meant nothing more than a red spot on the cheek. There was an irritating itch for a while, but it had no lasting impact on a memorable trip to the countryside, a camping expedition, or an enjoyable afternoon at the lake. That’s how things used to be.
But the world has changed now. It’s shrinking as people develop more of a passion for travel, exotic vacations, and exploration. People also now have a wider choice of recreational activities. But this new-found freedom entails certain risks. Going to watch the Carnival in Rio? Zika is not far away. Exploring the wilderness of Africa? Malaria may spoil the fun. Visiting the Taj Mahal? Beware of dengue fever!