Options mutation of infectious agents entry of new suscepti…
Options mutation of infectious agents entry of new susceptibles into the population reducing the number of susceptibles spreading of natural infection host density is above the invasion threshold and immunity is lifelong Question In the study of microparasite population dynamics, which of the options above best follow the statements below? Statements infection can be maintained in an endemic state when immunity is lifelong by: boom and bust epidemics occur when: herd immunity is increased by: herd immunity is decreased by: R0 can be decreased by: