Readers React
School hygiene workshops in Nicaragua
14 Apr 03
In reaction to the item "Nicaragua: UNICEF expands its healthy schools initiative", Philippe Barragne-Bigot, adds that Unicef hopes to have completed hygiene workshops in 17 schools by Jul 2003.
Saline water intrusion
24 Feb 03
In reaction to problem of seawater intrusion Dakar, mentioned in Source Special Features, Feb 2003, Dennis Baker explains how California has tackled this problem.
Household centred environmental sanitation
10 Feb 03
The HCES guidelines presented make great reading. The mentioned principles have been incorporated in the Model for self-financing integrated development, which is in the public domain and has been available for downloading from website http://www.flowman.
Erratum: Financing: UN-HABITAT launches water and sanitation trust fund
25 Nov 02
This article in Source no. 43-44 mentions wrong numbers: "The number of urban dwellers not receiving safe water increased from 138 million in 1990 to 118 million in 2000."
Hand washing and improved sanitary behaviour
23 Aug 02
In response to your comments on hand washing and improved sanitary behavior, remember that unlike the many bacterial enteric pathogens, rotavirus is a universal and democratic virus: it infects all children in the first few years of life regardless of the
Bio-assay
29 Jul 02
"We have recently developed a new bioassay for cholera toxin of unprecedented speed, sensitivity and dynamic range."
