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Healthcare personnel (HCP) were recruited to provide serum samples, which were tested for antibodies against Ebola or Lassa virus to evaluate for asymptomatic seroconversion.
Setting:
From 2014 to 2016, 4 patients with Ebola virus disease (EVD) and 1 patient with Lassa fever (LF) were treated in the Serious Communicable Diseases Unit (SCDU) at Emory University Hospital. Strict infection control and clinical biosafety practices were implemented to prevent nosocomial transmission of EVD or LF to HCP.
Participants:
All personnel who entered the SCDU who were required to measure their temperatures and complete a symptom questionnaire twice daily were eligible.
Results:
No employee developed symptomatic EVD or LF. EVD and LF antibody studies were performed on sera samples from 42 HCP. The 6 participants who had received investigational vaccination with a chimpanzee adenovirus type 3 vectored Ebola glycoprotein vaccine had high antibody titers to Ebola glycoprotein, but none had a response to Ebola nucleoprotein or VP40, or a response to LF antigens.
Conclusions:
Patients infected with filoviruses and arenaviruses can be managed successfully without causing occupation-related symptomatic or asymptomatic infections. Meticulous attention to infection control and clinical biosafety practices by highly motivated, trained staff is critical to the safe care of patients with an infection from a special pathogen.
The CATIE (Clinical Antipsychotic Trials of Intervention Effectiveness) schizophrenia study sought to compare the effectiveness and cost-effectiveness of four second-generation antipsychotics and one first-generation antipsychotic in the treatment of schizophrenia. This study design posed several challenges for statistical analysis. The authors describe the stratified Phase 1/1A randomization, and explain the steps for comparing treatment groups within the stratified randomization structure. They describe strategies to perform treatment group comparisons that control the inflation of Type 1 error due to multiple pair-wise testing, and focus on the evaluation of multiple outcomes. The authors examine the advantages of using all-cause treatment discontinuation as the primary effectiveness outcome and the specific statistical issues for its analysis, and address the impact of missing data due to phase discontinuation on analysis of the secondary outcomes. The authors contrast the statistical methods employed to address this issue, and consider further methods.
There are claims that second-generation antipsychotics produce fewer
extrapyramidal side-effects (EPS) compared with first-generation
drugs.
Aims
To compare the incidence of treatment-emergent EPS between
second-generation antipsychotics and perphenazine in people with
schizophrenia.
Method
Incidence analyses integrated data from standardised rating scales and
documented use of concomitant medication or treatment discontinuation for
EPS events. Mixed model analyses of change in rating scales from baseline
were also conducted.
Results
There were no significant differences in incidence or change in rating
scales for parkinsonism, dystonia, akathisia or tardive dyskinesia when
comparing second-generation antipsychotics with perphenazine or comparing
between second-generation antipsychotics. Secondary analyses revealed
greater rates of concomitant antiparkinsonism medication among
individuals on risperidone and lower rates among individuals on
quetiapine, and lower rates of discontinuation because of parkinsonism
among people on quetiapine and ziprasidone. There was a trend for a
greater likelihood of concomitant medication for akathisia among
individuals on risperidone and perphenazine.
Conclusions
The incidence of treatment-emergent EPS and change in EPS ratings
indicated that there are no significant differences between
second-generation antipsychotics and perphenazine or between
second-generation antipsychotics in people with schizophrenia.
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