<prompt> All are true about communicability of Mlaria, except -The number of gametocytes in blood increasesGametocytes appear in blood 4-5 days after the appearance of the asexual parasite, in vivax infectionGametocytes appear in blood 10-12 days after the appearance of the asexual parasite, in falciparum infectionIn the early stage of infection, their density may exceed 1000 per cmm of blood  <response>: Malaria is communicable as long as mature,ble gametocytes exist in the circulating blood in sufficient densoty.In vivax infections,gametocytes appear in bloos 4-5 days after the appearance of asexual parasites,in falciparum infections they do not appear until 10-20 days after the first appearance of asexual parasites.During the early stages of infection the density may exceed 1000 per cubic mm of blood.Ref.PARKS TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE 21st edition page no 235. 