It could be days before they can rescue you and your family. Some of the same techniques used in wilderness survival shelters, can be implemented in an urban emergency shelter. We need to minimize the loss of heat. Convection, if the windows and doors are closed we lower heat loss by convection to the body.
The healing time it takes for a scab on the face to heal depends on  many factors including the length and depth of the wound. Most  facial scabs take anywhere from 3-10 day â¦ s to heal.
To a lesser degree, discharge from skin lesions (the scabs are not infectious). Incubation: The incubation period is 14 to 21 days. Contagious Period: The period of communicability is from 1 day prior to the rash to 5 or 6 days after the onset of the rash.