In malarious areas, all buildings or tents where personnel eat, sleep, work, or
congregate at night should be mosquito-proofed.
For the protection of all concerned, patients undergoing treatment for
mosquito-borne disease should be housed in mosquito-proof areas to prevent
transmission of disease agents from patient to mosquito and from mosquito to patient.
Routine maintenance of mosquito proofing is essential. Occupying units
should make minor repairs as needed.
a. Screening of Doors and Windows.
Screening against Anopheles mosquitoes, to be effective, must be 18
mesh or smaller.
The best grade metal or fiberglass screening available should be
Window screening should be full length and securely fastened.
Screen doors should open outward, be self-closing, and should be
strongly constructed, so they will not sag or warp.
In highly malarious areas, it is desirable to have double screen doors with
a hall at least 6 feet in length between them.
b. Closure of Other Openings. Careful attention must be paid to the closing of
all unscreened openings through which mosquitoes might gain entrance. All openings
in screened buildings, such as cracks, knotholes, spaces in flooring, walls, or corner
joints, should be closed with pieces of tin cans, shingles, or a mastic made by boiling
shredded paper, flour, and water into a doughy mass and adding sand and cement.
c. Tents. In malarious areas, all tents except those used solely for storage
should be equipped with insect screen liners. Application of permethrin to screen liners
will increase their effectiveness.
5-18. DESTRUCTION OF ADULT MOSQUITOES
a. Breaking the Cycle of Malaria Transmission. One of the most effective
means of promptly breaking the cycle of malaria transmission is the destruction of adult
mosquitoes. This may be accomplished with: