BBC får rapporter fra folk som bor i eller besøker Mexico:
There is great fear among the medical community. We know that the situation is very serious and that we are at high risk of infection. But we are more scared of carrying it into our homes and infecting our loved ones. One of my colleagues that was exposed chose to stay in a hotel rather than run the risk of infecting her daughters.
When I first arrived I was very blasé about the swine flu outbreak but now I am concerned.
I have been here dozens of times before. Mexico City is usually busy - you normally cannot move, but now its very quiet. There is still traffic but the volume is so minimal. My trip from the airport took 20 minutes instead of an hour and ten minutes. I am staying at the Four Seasons and on my arrival the restaurants were closed.