Frie's test is useful for diagnosis of -
Ans. is 'd' i.e., Chlamydiao Fries test (skin hypersensitivity test) was used for LGV (caused by chlamydia trachomatis),o But it is not used nowr because of high false positive results.
Mycoplasma
Rickettsia
Sarcoidosis
Chlamydia
Bacteria