Mexico begins a nationwide five-day shutdown of non-essential businesses and services in an effort to curb the spread of the H1N1 influenza.

Some Mexicans lighten the mood by decorating their face masks.

In the midst of the global financial crisis, annual May Day protests take place in cities across Europe, turning violent in Berlin and Istanbul.

Another 60 Taliban militants are killed on day four of fighting in Pakistan’s Buner district.