Patient was given chloroquine & doxycycline for 7 days. Patient&;s fever decreases in 4 days but , peripheral smear showed occasional gametocytes of plasmodium falciparum. This type of drug resistance is -
R1 type
R2 type
R3 type
R4 type
Types of Drug Resistance In defining criteria for resistance to the aminoquinolineantimalarial drugs, the WHO has described three grades of resistance following treatment (Low grade) R1 : Recrudescence of infection between 7 and 28 days of completing treatment following initial resolution of symptoms and parasite clearance. (High grade) R2 : Reduction of parasitaemia by > 75% at 48 hours but failure to clear parasites<br />within 7 days. R3 : Parasitaemia does not fall by >75% within 48 hours. (www.slideshare.net)
Communicable diseases