Do the needles and other materials used in Sujok transmit disease?

The only instrument that pierces the skin is sujok needle. They are mostly used as disposable needles. (Throw away after single use) or used as single patient needles (i.e the needles used are removed, sterlised and used on the same patient). Never needles are interchanged. So no chance of disease transmission. Patients can always demand for single use needles as they are less expensive. Since the other materials are not used to pressure the skin Chances of transmission of diseases are remote.