The prototype seventh pandemic El Tor biotype of Vibrio cholerae O1 is completely replaced from 1995 by El Tor strains that have classical type ctxB in Kolkata, India.
KAUSIK GHOSH
"The prototype seventh pandemic El Tor biotype of Vibrio cholerae O1 is completely replaced from 1995 by El Tor strains that have classical type ctxB in Kolkata, India.".
Emerging Infectious Diseases,
vol: 15,
No. 1
Jan. 2009, pp: 131-132,
https://scholar9.com/publication-detail/the-prototype-seventh-pandemic-el-tor-biotype-of-v-5489
