What was funny is that state TV interrupted normal broadcasts and some minister (I can't remember which) said that people has nothing to worry about as they were not aggressive. My cleaning lady was there when we were watching it, and, in typical Egyptian fashion, assured me the minister was a liar and that she had it on good evidence from a friend of a friend of her sister's that a women in her neighborhood had been attacked and that the locusts had pocked holes in her face.
More seriously, the locusts could have done serious damage to crops if it had been slightly hotter -- they don't feed below 30C, apparently. Where they might be causing a famine, however, is in already impoverished Mauritania.
If you want to help, donate to Oxfam which has a program to help with the locust attack.