Sandrock, C.; Wohlfahrt, J.; Hasselmann, M.; Brunner, W. and Brunner, P. (2022) Novel heat-treatment sufficiently controls Varrtoa levels in honeybees colonies. In: Book of Abstracts of the 73rd Annual Meeting of the European Federation of Animal Science, Porto, Portugal, 5 – 9 September, 2022, Wageningen Academic Publishers, The Netherlands (28), p. 271.