4月3日，南京最大的活禽交易市场——紫金山交易市场内，工作人员在进行地面消毒。自H7N9禽流感疫情出现后，该市场每天安排专人对家禽经营情况进行巡视，每天根据场上交易情况，分六个时段进行人工地面药水消毒和空中自动喷雾消毒，预防和降低疫情发生。【中新】

A worker is carrying out a thorough cleaning and disinfection at a live poultry trade market in Nanjing, Jiangsu Province on Apr. 3, 2013. Authorities in some Chinese regions have ordered health institutions to step up monitoring of H7N9 bird flu as four more cases were reported Tuesday. The order comes after seven people in east China's Jiangsu Province and Shanghai have been confirmed as being infected with the lesser-known H7N9 bird flu. [Chinanews.com]