Cyril P. Callister Cyril P. Callister Cyril Percy Callister (16 February 1893 – 5 October 1949) was an Australian chemist and food technologist who developed the Vegemite yeast spread. The son of a teacher and postmaster, and one of seven children, he attended the Ballarat School of Mines and later won a scholarship to the University of Melbourne. He gained a Bachelor of Science degree in 1914 and a Master of Science degree in 1917. In early 1915, Callister was employed by food manufacturer Lewis & Whitty, but later that year he enlisted in the Australian Imperial Force. After 53 days, however, he
Shortages in Venezuela to develop AIDS. Venezuelans also said it was hard to find acetaminophen to help alleviate the newly introduced chikungunya virus, a potentially lethal mosquito-borne disease. Diphtheria, which had been eradicated from Venezuela in the 1990s, reappeared in 2016 due to shortages of basic drugs and vaccines. Demonstrations against the effects of shortages have occurred throughout Venezuela. In August 2014, many Venezuelans protested against the fingerprint rationing put in place by the government while protests against shortages grew from late-2014 into 2015. Of the 2,836 protests that occurred in the first half of 2015, a little more than one in six