Unequal sharing results when there is significant difference in electronegativities. The more electronegative atom(s) draws bond electrons closer, leaving the less electronegaâ¦tive atom(s) slighty positive. The result of unequal sharing of electrons is the formation of polar bonds. I'm an undergraduate in Physical Sciences stream.
By 1831 cholera had arrived in Hamburg, and the first case in England was reported in October 1831 in Sunderland. The first case in East London was on 12 February, 1832.For all the fear attached to this new disease, only about 800 persons died of cholera in the East End.n the summer of 1831, after news had reached England that a cholera epidemic had arrived in the Baltic ports, Charles Greville said in his Memoirs [ chapter 15 ].
2000;6(2). We report results of surveillance for cholera caused by Vibrio cholerae O139 from September 1992, when it was first identified, to December 1998. V. cholerae O139 dominated as the causative agent of cholera in Calcutta during 1992-93 and 1996-97, while the O1 strains dominated during the rest of the period.f the 193 recognized O serogroups of V. cholerae, only O1 and O139 cause epidemic and pandemic cholera. V. cholerae O139 was first identified in September 1992 in southern India and rapidly spread to all cholera-endemic areas in India and neighboring countries.