I've lived in this particular part of Vienna for a little over ten years now. It's an urban area, close to the city center, in a district with a Green Party majority, but virtually no green, no parks, and no ponds or other bodies of water.
Up until a few weeks ago, this topographical predisposition has meant that this area was virtually mosquito-free. In fact, I don't think that I've ever had mosquitos in my flat, and I cannot remember ever having been bitten by these pests when sitting outside one of the many cafés and restaurants in the area.
This has changed dramatically. Due to heavy rainfall a few weeks ago, this area is now inundated with mosquitos. In fact it's so bad that you're close to being sucked dry if you leave your house after 6pm without wearing thick layers of insect repellent. Early this morning I woke up from a high-piched buzzing noise next to my right ear. They had arrived in my bedroom.
Today, I mounted a fly screen on my bedroom window and scorched the place with an insect poison that's purportedly harmless for humans (to be on the safe side, I left the room immediately, and then opened the fly-screened window wide to get some of the poison out).
It's as if I was living in the countryside, which is odd in an area without the slightest touch of countryside about it.
In fact, it's a lot worse in the countryside right now. A colleague of mine at work told me he hasn't been able to sit on his balcony even once this summer; first because it was so cold, then because of the heavy rain, and now because of the mosquitos.
My own complaints seem to pale in comparison.