You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is In a case of Kala-azar aldehyde test becomes positive after and explain in detail?
In the Kala-azar endemic areas of India, Napier&;s aldehyde test has been used for a long time. The test relies on the jellification caused by the binding of the serum globulins to the formaldehyde About 85 per cent of patients with disease of 3 months or more gives positive reaction.TEXTBOOK OF MEDICAL PARASITOLOGY, BAVEJA,3RD EDITION, PAGE NO 42