The microfilarial level in the peripheral blood of cats naturally infected with Brugia pahangi in Bangkok area was monitored at two-hour intervals for 24 hours. Thick smear of blood films were stained with Giemsa and counted for microfilarial number. The microfilarial periodicity pattern showed nocturally subperiodic with a periodicity index of 48.81 and the peak hour at 23.16 hours. It was also found that the microfilariae appeared in the peripheral blood as a harmonic wave.
Chungpivat, Sudchit and Sucharit, Supat
"Microfilarial periodicity of Brugia pahangi in naturally in fected cats in Bangkok,"
The Thai Journal of Veterinary Medicine: Vol. 20:
1, Article 1.
Available at: https://digital.car.chula.ac.th/tjvm/vol20/iss1/1