Babesia is a big problem. Its in the blood supply. About 4 out of 100 pints induce parasitema in blood inoculated hamsters. Meaning if you take a syringe and draw up some blood and inject it into a hamster the hamster will test positive for babesia, either using a giemsa stain, a pcr-dna test...
This post represents the most recent updates on practical Lyme Disease testing as of September 2017. It is in overview form with a brief explanation of the ins and outs of Lyme disease in the United States. It probably is not applicable to other countries.
When to suspect Lyme disease...