Construction, transport and chemical manufacturing sectors are likely to be the worst-affected by the coronavirus pandemic in China, says a report. However, India's top imports -- crude oil and gems and jewellery -- which collectively account for 46 per cent of total imports are relatively insulated from the public health crisis in China, according to the report by ICICI Securities. The novel coronavirus which originated in China's Wuhan city towards the end of 2019 has so far claimed over 5,000 lives and infected more than 1 lakh people globally.