On its website www.infektionsschutz.de, the German Federal Centre for Health Education recommends putting the laundry of Covid patients in a separate laundry bag. Wash their laundry at a minimum of 60°C with an all-purpose detergent. Allow the laundry to dry thoroughly afterwards.
It might not always be possible to wash laundry at over 60°C, however. In that case, you can use IMPRESAN Sensitive and IMPRESAN Universal Hygiene Laundry Rinse products to keep laundry germ-free.