Eco-photos of the week: April 26-May 2 - Masked in Hong Kong
Eco-photos of the week: April 26-May 2
photo 1 of 13
Masked in Hong Kong
Contract staff at the Port Health Department stand firm at the Hong Kong Airport in China. The World Health Organization has raised the pandemic alert for swine flu to Phase 5, which means sustained human-to-human transmissions are occurring. The new flu strain broke out in Mexico, where more than 150 people have died so far.