Bangladesh Garment Manufacturers and Exporters Association (BGMEA) on Thursday said buyers have so far cancelled orders worth US$ 3 billion following the outbreak of coronavirus.   About 1,092 factories reported that 943.12 million pieces of RMG products worth US$ 3 billion have either been cancelled or held up until 5pm on Thursday, according to BGMEA sources.   This cancellation will affect approximately 2.16 million Bangladeshi workers, the sources said.