• Reinfection of the Virus that Causes COVID-19

    Reinfection of the Virus that Causes COVID-190

    In general, reinfection means a person was infected (got sick) once, recovered, and then later became infected again. Based on what we know from similar viruses, some reinfections are expected. We are still learning more about the virus that causes COVID-19. Ongoing COVID-19 studies will help us understand: How likely is reinfection How often reinfection

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  • Common Investigation Protocol for Investigating Suspected SARS-CoV-2 Reinfection

    Common Investigation Protocol for Investigating Suspected SARS-CoV-2 Reinfection0

    Procedures/Methods DESIGN Statement of purpose: This toolkit is designed to provide state and local health departments with the tools needed to investigate suspected cases of SARS-CoV-2 reinfection. How investigational design meets objectives: This toolkit can be used in conjunction with surveillance (passive or active) for suspected cases of SARS-CoV-2 reinfection. Once the study population is

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  • Investigative Criteria for Suspected Cases of SARS-CoV-2 Reinfection (ICR)

    Investigative Criteria for Suspected Cases of SARS-CoV-2 Reinfection (ICR)0

    CDC is aware of recent reports of suspected cases of SARS-CoV-2 reinfection among persons who were previously diagnosed with COVID-19 [1–3]. There is currently no widely accepted definition of what constitutes SARS-CoV-2 reinfection and the reports use different testing methods, making reinfection diagnoses difficult. To develop a common understanding of what constitutes SARS-CoV-2 reinfection, CDC

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  • “Excess Death” Data Point to Pandemic’s True Toll

    “Excess Death” Data Point to Pandemic’s True Toll0

    In the United States, there have been hundreds of thousands of deaths attributed to COVID-19 since the start of the pandemic. But CDC scientists suspect there may be more people who died, either from undiagnosed COVID-19 or from other causes related to the pandemic. ”Pandemics and disasters often cause what we call ‘indirect’ deaths,” says

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  • Targeted Wastewater Surveillance at Facilities, Institutions, and Workplaces

    Targeted Wastewater Surveillance at Facilities, Institutions, and Workplaces0

    Use this guidance to implement wastewater-based disease surveillance. Wastewater-based disease surveillance is a rapidly developing science, and CDC will continue to update guidance and information as it becomes available. Overview of targeted wastewater surveillance Targeted wastewater surveillance at facilities, institutions, and high-density critical infrastructure workplaces has been proposed as a complementary method for screening of

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  • Public Health Interpretation and Use of Wastewater Surveillance Data

    Public Health Interpretation and Use of Wastewater Surveillance Data0

    Overview of wastewater surveillance data interpretation and use Appropriate public health interpretation of wastewater surveillance data depends on understanding the surveillance sampling strategy and testing limitations, as well as valid data processing and analysis. Wastewater surveillance data are primarily used in three ways: Monitoring for presence of infection within a community. Tracking trends in infection within

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