The mesh size recommended by the WHO for protection from yellow fever, the zika virus, dengue, or malaria in high-risk areas is at least 156 mesh (mesh= the number of holes in an area of 1 square inch = 6,45 cm²).
The MOSQUITO-SAFE has approx. 200 mesh.
- WHO (Ed.) Specifications for Netting Materials, Stand 2001, accessed May 14, 2021
https://apps.who.int/iris/bitstream/handle/10665/66714/WHO_CDS_RBM_2001.28.pdf
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