Читать книгу Practical Guide to Diagnostic Parasitology - Lynne Shore Garcia - Страница 30

With few exceptions, patients are generally retested after therapy to confirm therapeutic efficacy. If testing reveals the infection has not been eradicated, there may be several reasons. In some cases, the patient may not have taken the medication correctly or may have failed to take the number of recommended doses; these reasons are more likely than the presence of a drug-resistant organism. However, there are certainly examples where drug resistance is possible and is the more likely reason, often depending on the geographic area involved. Another reason might involve the timing between therapy and posttreatment checks for cure; if the time lag is extended, the patient’s infection may also represent reinfection. This is particularly true if the patient’s living conditions, site, and other epidemiological considerations are not modified.