Guidance on regulations for the transport of infectious substances 2019 – 2020 7 January 2020 | Publication Download (1.8 MB) Overview World Health Organization. (2019). Guidance on regulations for the transport of infectious substances 2019 – 2020: applicable from 1 January 2019. World Health Organization. WHO Team WHO Headquarters (HQ) Reference numbers WHO Reference Number: WHO/WHE/CPI/2019.20 Copyright