[Rubella immunity: immunofluorescence test as a rapid and reliable alternative to the haemagglutination inhibition test (author's transl)].

Nowadays the haemagglutination inhibition test (HIT) is used almost exclusively in the assessment of rubella immunity. But this test has a few weaknesses. Indirect immunofluorescence test (IFT), on the other hand, has had little attention paid to it. The author performed parallel tests on 1621 sera. Of 1339 HIT- positive sera 1299 (97%) were also also positive in the immunofluorescence test, which takes two hours. The IFT in many situations proved to be superior to the HIT. It is recommended as an alternative to HIT, both in the assessment of rubella immunity and in checking HIT results.