LONDON (Reuters) - Burberry said on Friday the outbreak of coronavirus in China was hurting luxury demand in the mainland and Hong Kong, both important markets for the British brand.The luxury label said 24 of its 64 stores in mainland China were closed, with remaining stores operating with reduced hours and were seeing significant declines in footfall."The outbreak of the coronavirus in mainland China is having a material negative effect on luxury demand," Chief Executive Marco Gobbetti said...