Sentence examples for studies of outbreaks from inspiring English sources
Case-control studies of outbreaks and of sporadic cases of infectious diseases may provide a biased estimate of the infection rate ratio, due to selecting controls that are not at risk of disease.
Studies of outbreaks which started during school closure were excluded.
Indeed, this information is usually omitted in case-control studies of outbreaks, especially when controls are selected from a population database, as was our situation.
They remove reliance on extrapolating from studies of outbreaks, subgroups, or other countries, which may use substantially different methods and settings.
Epidemiological studies of outbreaks of the highly pathogenic H5N1 virus in Asia suggest that human genetic polymorphisms influence disease severity [ 3, 4].
Rationale: Studies of outbreaks based on the phenotypic characteristics of microorganisms (antigenic properties, metabolic or antibiotic resistance) are limited and do not provide conclusive differences or similarities between them.
This need exists for epidemiological studies of outbreak strains, where strain discrimination is the primary focus, as well as for population genetic studies where genomic information is of central importance.
Because of the difficulty in obtaining conclusive findings, studies of outbreak investigations complicated by universal exposure are less likely to be published and less likely to result in recommendations for public health measures to prevent continuation or recurrence of exposure.
Previous comparative genomic studies of outbreak-associated L. monocytogenes have found several strain and serotype-specific coding sequences between serotype 4b and 1/2a strains, but amongst these there were few relevant genetic traits suggestive of virulence potential [ 21, 30].
As the molecular epidemiological study of outbreaks, pulsed-field gel electrophoresis (PFGE) is performed in general.
Over the last few decades, molecular phylogenetic analyses of RNA viruses have been used frequently in the study of outbreaks and transmission chains [ 1- 5].
