Fig. 3.

Malaria cases in India (1970-2011) as recorded by the NVBDCP. Cases started rising in 1970, peaking in 1976 to 6.45 million cases and thereafter following the implementation of the Modified Plan of Operation in 1977, malaria cases declined but mainly P. vivax malaria due to its sensitivity to chloroquine. P. falciparum % was about 10 in 1977 but due to fall in vivax malaria, this % has risen to about 50 and the parasite has become mono- to multi-drug resistant (Source: Ref. 28 reproduced with permission).