PCR can detect the virus as well as identify the type of herpes virus. Because this test is more sensitive than culture, it is useful in circumstances where the virus is present in low numbers (such as viral encephalitis) or if the lesion is several days old.
After a brief stop at Jamaica, Columbus sailed to Central America, arriving at Guanaja (Isla de Pinos) in the Bay Islands off the coast of Honduras on 30 July. Here Bartolomeo found native merchants and a large canoe, which was described as being long as a galley and filled with cargo.
All together, Columbus made four voyages to the New World between 1492 and 1504. He explored the coasts of Cuba, Jamaica , Hispaniola, and Puerto Rico. On his last two voyages, Columbus reached the mainland of Central and South America and travelled as far south as the mouth of the Orinoco River.