Publications by authors named "Jaehwa Chung"
Evaluation of the acute hepatitis B surveillance system in the Republic of Korea following the transition to mandatory surveillance.
Osong Public Health Res Perspect
August 2024
Background: The prevalence of hepatitis B in the Republic of Korea has declined, yet the disease burden persists. After various changes in targets and methods, the national hepatitis B surveillance system now exclusively monitors acute cases. We aimed to assess the alignment of this system with its intended purpose and to recommend improvements supporting the national strategic plan for viral hepatitis management.
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- A study was conducted involving 107 close contacts of individuals infected with the Omicron variant of COVID-19 to find the best quarantine duration.
- The average time taken from exposure to a confirmed diagnosis was found to be 3.7 days.
- Most diagnoses (70%) occurred by day 5 and nearly all (99.1%) by day 10, indicating that a 10-day quarantine period is optimal.
Article Synopsis
- - The November 2021 outbreak of the Omicron variant in South Korea started from one imported case and quickly spread to various settings like homes, kindergartens, and workplaces.
- - Within just three weeks, the outbreak led to 11 clusters of COVID-19 cases, highlighting the variant's ability to spread easily.
- - An epidemiologic curve showed that the Omicron variant was rapidly transmitting through the community, indicating a significant public health concern.