Author: Miladin Kostovic

# medanensis

- `Genus:............ Leptospira`
- `Species:.......... interrogans`
- `Serogroup:........ Sejroe`
- `Serovar:.......... medanensis`
- `Strain:........... Hond HC`
- `Year:............. 1948`
- `Origin:........... Dog`
- `Country:.......... Sumatra, Indonesia`

### History of serovar:

Hond HC is one of the strains isolated in 1929 from healthy gods in Sumatra, Indonesia, by Kouwenaar and Wolff (1929). In the original publication no names of strains are given. The strain was later desgnated by Wolff as Hond HC (personal communiction).

The strain was studied by Walch-Sorgdrager and Bohlander (1939) and later by Borg-Petersen (1944). The first authors treated the strain as a representative of a group of strains which they designated H.C. Borg-Petersen refers to "type hc strain HC2 or "H.C.". Collier (1948) suggested the serovar name medanensis. The strain appears in the first serovar list of 1954(Wolff, Broom, 1954) under the strain name H.C. In the WHO list of 1959 the name Hond HC is used officially for the first time. The strain was submitted to factor analysis by Kmety (1977), who, on the basis of the results, suggested that it should be placed in the subgroup Wolffi.

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