PMID- 11490993
OWN - NLM
STAT- MEDLINE
DCOM- 20010927
LR  - 20190513
IS  - 0035-9203 (Print)
IS  - 0035-9203 (Linking)
VI  - 95
IP  - 3
DP  - 2001 May-Jun
TI  - Validity of Lot Quality Assurance Sampling to optimize falciparum malaria surveys 
      in low-transmission areas.
PG  - 267-9
AB  - To control the reappearance of malaria in the Madagascan highlands, indoor 
      house-spraying of DDT was conducted from 1993 until 1998. Before the end of the 
      insecticide-spraying programme, a surveillance system was set up to allow rapid 
      identification of new malaria epidemics. When the number of suspected clinical 
      malaria cases notified to the surveillance system exceeds a predetermined 
      threshold, a parasitological survey is carried out in the community to confirm 
      whether or not transmission of falciparum malaria is increasing. Owing to the low 
      specificity of the surveillance system, this confirmation stage is essential to 
      guide the activities of the control programme. For this purpose, Lot Quality 
      Assurance Sampling (LQAS), which usually requires smaller sample sizes, seemed to 
      be a valuable alternative to conventional survey methods. In parallel to a 
      conventional study of Plasmodium falciparum prevalence carried out in 1998, we 
      investigated the ability of LQAS to rapidly classify zones according to a 
      predetermined prevalence level. Two prevalence thresholds (5% and 15%) were 
      tested using various sampling plans. A plan (36, 2), meaning that at least 2 
      individuals found to be positive among a random sample of 36, enabled us to 
      classify a community correctly with a sensitivity of 100% and a specificity of 
      94%. LQAS is an effective tool for rapid assessment of falciparum malaria 
      prevalence when monitoring malaria transmission.
FAU - Rabarijaona, L
AU  - Rabarijaona L
AD  - Pasteur Institute of Madagascar, University of Rome, Italy.
FAU - Rakotomanana, F
AU  - Rakotomanana F
FAU - Ranaivo, L
AU  - Ranaivo L
FAU - Raharimalala, L
AU  - Raharimalala L
FAU - Modiano, D
AU  - Modiano D
FAU - Boisier, P
AU  - Boisier P
FAU - De Giorgi, F
AU  - De Giorgi F
FAU - Raveloson, N
AU  - Raveloson N
FAU - Jambou, R
AU  - Jambou R
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - England
TA  - Trans R Soc Trop Med Hyg
JT  - Transactions of the Royal Society of Tropical Medicine and Hygiene
JID - 7506129
SB  - IM
MH  - Child
MH  - Health Surveys
MH  - Humans
MH  - Madagascar/epidemiology
MH  - Malaria, Falciparum/epidemiology/*prevention & control
MH  - Parasitology/methods
MH  - Population Surveillance/*methods
MH  - Prevalence
MH  - Quality Assurance, Health Care/*methods
MH  - Reproducibility of Results
MH  - Sampling Studies
MH  - Sensitivity and Specificity
EDAT- 2001/08/09 10:00
MHDA- 2001/09/28 10:01
CRDT- 2001/08/09 10:00
PHST- 2001/08/09 10:00 [pubmed]
PHST- 2001/09/28 10:01 [medline]
PHST- 2001/08/09 10:00 [entrez]
AID - 10.1016/s0035-9203(01)90230-5 [doi]
PST - ppublish
SO  - Trans R Soc Trop Med Hyg. 2001 May-Jun;95(3):267-9. doi: 
      10.1016/s0035-9203(01)90230-5.