It is bizzare the amount of disinformation on parasites. A doctor tried ordering me an f buski blood test and the cdc apparently said they don't have them anymore because of too many 'false positives' and 'false negatives'.
Also some doctors think the stool test is reliable which is a joke, including travel doctors. If the tests usually come up negative no wonder they think people in the U.S. can't get parasites.