A Cholera Epidemic in North Sumatra, Indonesia

Epidemiological aspects on an outbreak of cholera at North Sumatra Province, Indonesia, in 1978 and 1979 were analyzed. The epidemic started at Nias island on March 1978, spread to the main area of the province until the beginning of 1979 and returned to Nias along the highways. A total of 23,900 cases of clinical cholera was reported in which 1,110 died by the 30th week of 1980. Vibrio cholerae eltor Ogawa strains were isolated from the cases reported in 1978 while eltor Ogawa and Inaba strains were isolated in 1979.This study was supported by the Ministry of Health, Republic of Indonesia, and by the Japan International Cooperation Agency(OTA-43)

Crystallographic and superconducting properties of the fully-gapped noncentrosymmetric 5d-electron superconductors CaMSi3 (M=Ir, Pt)

We report crystallographic, specific heat, transport, and magnetic properties of the recently discovered noncentrosymmetric 5d-electron superconductors CaIrSi3 (Tc = 3.6 K) and CaPtSi3 (Tc = 2.3 K). The specific heat suggests that these superconductors are fully gapped. The upper critical fields are less than 1 T, consistent with limitation by conventional orbital depairing. High, non-Pauli-limited {\mu}0 Hc2 values, often taken as a key signature of novel noncentrosymmetric physics, are not observed in these materials because the high carrier masses required to suppress orbital depairing and reveal the violated Pauli limit are not present.Comment: 8 pages, 8 figure