The Recent Cholera Outbreak in the South Mrican Gold Mining Industry

A large-scale cholera surveillance programme was introduced in South Africa in November 1973 as a result of the progressive southward spread of cholera in Africa. Moore's technique for the isolation of Salmonella paratyphi was modified for cholera detection. The method proved to be very sensitive and it was possible to detect Vibrio cholerae in main sewer lines after its casual and transient introduction by an unidentified carrier. Transmission occurred in the acc!im<:tisation centre, probably through the drinking of water contaminated after it had been drawn from the tap. Faecal contamination of the environment was demonstrated, and V. cho/erae was isolated from the floor, onto which it had been disseminated from the perianal region by means of profuse perspiration. Perpetuation of cholera was probably aided by a faecally contaminated air-humidifying water reservoir, the water of which experimentally allows survival and multiplication of V. cholerae for a week and longer. Prophylactic treatment of selected high-risk groups of people was administered in the form of doxycycline, which appeared to result in rapid termination of the epidemic. Mass vaccination of all mine personnel (20 000) was carried out to reduce the incidence of clinical cholera and the bacterial load

The SARAO MeerKAT 1.3 GHz Galactic Plane Survey

We present the SARAO MeerKAT Galactic Plane Survey (SMGPS), a 1.3 GHz continuum survey of almost half of the Galactic Plane (251○ ≤l ≤ 358○ and 2○ ≤l ≤ 61○ at |b| ≤ 1 5). SMGPS is the largest, most sensitive and highest angular resolution 1 GHz survey of the Plane yet carried out, with an angular resolution of 8″ and a broadband RMS sensitivity of ∼10–20 μJy beam−1. Here we describe the first publicly available data release from SMGPS which comprises data cubes of frequency-resolved images over 908–1656 MHz, power law fits to the images, and broadband zeroth moment integrated intensity images. A thorough assessment of the data quality and guidance for future usage of the data products are given. Finally, we discuss the tremendous potential of SMGPS by showcasing highlights of the Galactic and extragalactic science that it permits. These highlights include the discovery of a new population of non-thermal radio filaments; identification of new candidate supernova remnants, pulsar wind nebulae and planetary nebulae; improved radio/mid-IR classification of rare Luminous Blue Variables and discovery of associated extended radio nebulae; new radio stars identified by Bayesian cross-matching techniques; the realisation that many of the largest radio-quiet WISE H II region candidates are not true H II regions; and a large sample of previously undiscovered background H I galaxies in the Zone of Avoidance

The MeerKAT Galaxy Cluster Legacy Survey: I. Survey overview and highlights

Please abstract in the article.The South African Radio Astronomy Observatory (SARAO), the National Research Foundation (NRF), the National Radio Astronomy Observatory, US National Science Foundation, the South African Research Chairs Initiative of the DSI/NRF, the SARAO HCD programme, the South African Research Chairs Initiative of the Department of Science and Innovation.http://www.aanda.orghj2022Physic