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  Indian J Med Microbiol
 

Figure 2: A projection of world population growth since the beginning of the human species. Relatively stable for many thousands of years, the population began to expand rapidly near the beginning of the twentieth century (1900 arrow) and has multiplied roughly seven fold since then (2014 arrow). In the absence of major efforts at contraception or catastrophic human disaster this expansion is projected to continue into the future.

Figure 2: A projection of world population growth since the beginning of the human species. Relatively stable for many thousands of years, the population began to expand rapidly near the beginning of the twentieth century (1900 arrow) and has multiplied roughly seven fold since then (2014 arrow). In the absence of major efforts at contraception or catastrophic human disaster this expansion is projected to continue into the future.