Wuchereria bancrofti in Tanzania: microfilarial periodicity and effect of blood sampling time on microfilarial intensities

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Wuchereria bancrofti in Tanzania: microfilarial periodicity and effect of blood sampling time on microfilarial intensities. / Simonsen, Poul Erik; Niemann, L.; Meyrowitsch, Dan Wolf.

In: Tropical Medicine & International Health, Vol. 2, No. 2, 1997, p. 153-158.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Simonsen, PE, Niemann, L & Meyrowitsch, DW 1997, 'Wuchereria bancrofti in Tanzania: microfilarial periodicity and effect of blood sampling time on microfilarial intensities', Tropical Medicine & International Health, vol. 2, no. 2, pp. 153-158. https://doi.org/10.1046/j.1365-3156.1997.d01-237.x

APA

Simonsen, P. E., Niemann, L., & Meyrowitsch, D. W. (1997). Wuchereria bancrofti in Tanzania: microfilarial periodicity and effect of blood sampling time on microfilarial intensities. Tropical Medicine & International Health, 2(2), 153-158. https://doi.org/10.1046/j.1365-3156.1997.d01-237.x

Vancouver

Simonsen PE, Niemann L, Meyrowitsch DW. Wuchereria bancrofti in Tanzania: microfilarial periodicity and effect of blood sampling time on microfilarial intensities. Tropical Medicine & International Health. 1997;2(2):153-158. https://doi.org/10.1046/j.1365-3156.1997.d01-237.x

Author

Simonsen, Poul Erik ; Niemann, L. ; Meyrowitsch, Dan Wolf. / Wuchereria bancrofti in Tanzania: microfilarial periodicity and effect of blood sampling time on microfilarial intensities. In: Tropical Medicine & International Health. 1997 ; Vol. 2, No. 2. pp. 153-158.

Bibtex

@article{a609af7074ca11dbbee902004c4f4f50,
title = "Wuchereria bancrofti in Tanzania: microfilarial periodicity and effect of blood sampling time on microfilarial intensities",
abstract = "The circadian periodicity of Wuchereria bancrofti microfilarial (mf) intensities in peripheral blood was analysed in a group of infected individuals from an endemic community in north-eastern Tanzania. The mf density was quantified at two-hourly intervals for 24 hours. A clear nocturnal periodic pattern was observed. Mathematical analysis of the data indicated a peak at 0152 h and a periodicity index of 117.5. A periodicity equation was developed describing the average relation between mf intensity and hour of the day for the study area. Based on the observed periodicity pattern, the effect of blood sampling before peak time is discussed, and the importance of taking sampling time into consideration when analysing data from epidemiological studies is emphasized. A simple method is devised which can be used to adjust for the influence of time on mf intensities, in studies where accurate information on mf intensities is necessary, and where it is impossible to obtain all samples at peak time.",
author = "Simonsen, {Poul Erik} and L. Niemann and Meyrowitsch, {Dan Wolf}",
note = "KEYWORDS Wuchereria bancrofti • microfilariae • circadian periodicity • diagnosis • sensitivity",
year = "1997",
doi = "10.1046/j.1365-3156.1997.d01-237.x",
language = "English",
volume = "2",
pages = "153--158",
journal = "Tropical Medicine & International Health",
issn = "1360-2276",
publisher = "Wiley-Blackwell",
number = "2",

}

RIS

TY - JOUR

T1 - Wuchereria bancrofti in Tanzania: microfilarial periodicity and effect of blood sampling time on microfilarial intensities

AU - Simonsen, Poul Erik

AU - Niemann, L.

AU - Meyrowitsch, Dan Wolf

N1 - KEYWORDS Wuchereria bancrofti • microfilariae • circadian periodicity • diagnosis • sensitivity

PY - 1997

Y1 - 1997

N2 - The circadian periodicity of Wuchereria bancrofti microfilarial (mf) intensities in peripheral blood was analysed in a group of infected individuals from an endemic community in north-eastern Tanzania. The mf density was quantified at two-hourly intervals for 24 hours. A clear nocturnal periodic pattern was observed. Mathematical analysis of the data indicated a peak at 0152 h and a periodicity index of 117.5. A periodicity equation was developed describing the average relation between mf intensity and hour of the day for the study area. Based on the observed periodicity pattern, the effect of blood sampling before peak time is discussed, and the importance of taking sampling time into consideration when analysing data from epidemiological studies is emphasized. A simple method is devised which can be used to adjust for the influence of time on mf intensities, in studies where accurate information on mf intensities is necessary, and where it is impossible to obtain all samples at peak time.

AB - The circadian periodicity of Wuchereria bancrofti microfilarial (mf) intensities in peripheral blood was analysed in a group of infected individuals from an endemic community in north-eastern Tanzania. The mf density was quantified at two-hourly intervals for 24 hours. A clear nocturnal periodic pattern was observed. Mathematical analysis of the data indicated a peak at 0152 h and a periodicity index of 117.5. A periodicity equation was developed describing the average relation between mf intensity and hour of the day for the study area. Based on the observed periodicity pattern, the effect of blood sampling before peak time is discussed, and the importance of taking sampling time into consideration when analysing data from epidemiological studies is emphasized. A simple method is devised which can be used to adjust for the influence of time on mf intensities, in studies where accurate information on mf intensities is necessary, and where it is impossible to obtain all samples at peak time.

U2 - 10.1046/j.1365-3156.1997.d01-237.x

DO - 10.1046/j.1365-3156.1997.d01-237.x

M3 - Journal article

VL - 2

SP - 153

EP - 158

JO - Tropical Medicine & International Health

JF - Tropical Medicine & International Health

SN - 1360-2276

IS - 2

ER -

ID: 218785