The invention provides an apparatus and a process for continuous virus inactivation. The apparatus for continuous virus inactivation in a product stream comprises a tube or hose 1 having an inlet 4 and an outlet 5 in each case connected to a product flow line 8 for conveying the product stream, where the tube or the hose 1 is curved and/or helically coiled with a number n of windings around a coil axis h and has one or more changes in direction and/or bends 2 in the coil axis h having an angle α of from 45° to 180° to alter the direction of action of the normals of the centrifugal force and the apparatus is characterized by a Dean number>；0 and a torsion parameter>；0.
