Press release of the French National Academy of Medicine (*) July 15, 2022
The sewer rat proliferates worryingly in large cities, Paris, particularly. Whether called Rattus norvegicus, brown rat or Norway rat, it is the most harmful of human commensal species due to its great adaptability, its food requirements, its intense prolificity and, especially, the bacterial, viral and parasitic zoonoses of which it can be the vector.
Sewer rats proliferate in urban areas where they find food, water and nesting sites. With a ratio of 1.5 to 1.75 rats per inhabitant, Paris and Marseille would be among the 10 most infested cities in the world. At such a high level of population density, these nocturnal rodents emerge from basements and sewers and become visible during the day in streets, parks and gardens, all places where they can find food and water (gutters, rubbish bins, picnic areas, markets, homes, etc.).
Les hele raporten her: 22.7.15-Communique-PCRA-30-Rats-degout-ENG