From Bob Cornez, Regulatory Affairs Europe
Several large pharmaceutical companies have been working on a contraceptive vaccine for dogs (19 April, p 19), but to my knowledge they all abandoned it. Whichever technique you use to stimulate the response of the T-cells, you never reach 100 per cent. And while in a clinical trial a result of 98 per cent efficacy is very significant, it’s a disaster for marketing if the competition (spaying) provides a guaranteed 100 per cent result.
Kapellen, Belgium
