In 1966-86 there were 1 675 213 cases of scabies in Poland. The highest incidence (580.5) per 100 000 inhabitants was noted in 1968, the lowest (41.7) in 1986. The highest morbidity falls on autumn and winter. The highest proportion of cases are children and teenagers (0-19 years old), the second group consists of people aged 20-64, the third - over 65 years old. Most frequent were single cases of scabies, but there occurred also group infections in families, schools, boarding schools and establishments. In the discussed period the losses brought about by this disease, in case of people 20-64 years old only, amount to 1 836 234 days of the sick leave, while the average absence in 1980 was 82 500 days.
The embryonal growth of Ornithonyssus bacoti (Hirst, 1913) is compared with that of Pergamasus brevicornis Berl. The common features were found to be: type of germ band, organization of the mouth apparatus, regressive revolutions and the development of the IV pair of perineal crura, whereas the distinguishing ones are: lower number of regressive revolutions of the embryo and the modus of dropping the egg membranes by larvae.
Zbadano efektywność handlowych biopreparatów owadobójczych z B. thuringiensis (Biobit, Novo Skeetal, Novodor) w redukcji liczebności prusaków (Blattella germanica L.).
Określono wrażliwość prusaków (Blattella germanica L.) różnorodnych pod względem wieku i płci, na owadobójczy biopreparat z Bacillus thuringiensis var. kurs taki (Dipel).