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COVID-19 surveillance involves monitoring the spread of the coronavirus disease in order to establish the patterns of disease progression. The World Health Organization (WHO) recommends active surveillance , with focus of case finding, testing and contact tracing in all transmission scenarios. [ 1 ]
Coronavirus disease 2019 (COVID-19, also known as SARS-2) is a contagious disease caused by the coronavirus SARS-CoV-2. In January 2020, the disease spread worldwide, resulting in the COVID-19 pandemic. The symptoms of COVID‑19 can vary but often include fever, [7] fatigue, cough, breathing difficulties, loss of smell, and loss of taste.
COVID-19 symptoms range from asymptomatic to deadly, but most commonly include fever, sore throat, nocturnal cough, and fatigue. Transmission of the virus is often through airborne particles. Mutations have produced many strains (variants) with varying degrees of infectivity and virulence. [9]
Ohio is one of 31 states with very high COVID-19 activity, according to wastewater data collected by the Centers for Disease Control and Prevention. Health officials monitor wastewater to detect ...
The most recent CDC data shows emergency department visits related to COVID-19 nationwide as “minimal,” and Dr. Robert Murphy, professor of infectious diseases at Northwestern University ...
Pandemics and their ends are not well-defined, and whether or not one has ended differs according to the definition used. As of 28 January 2025, COVID-19 has caused 7,083,856 [1] confirmed deaths, and 18.2 to 33.5 million estimated deaths. The COVID-19 pandemic ranks as the fifth-deadliest pandemic or epidemic in history. (Full article
“With a confirmed positive COVID-19 test, you are most likely being sent home to rest, stay away from others, and recover,” UC Davis Health in California wrote Feb. 8 on its website. “This ...
Symptoms of COVID-19. Some less common symptoms of COVID-19 can be relatively non-specific; however the most common symptoms are fever, dry cough, and loss of taste and smell. [1] [22] Among those who develop symptoms, approximately one in five may become more seriously ill and have difficulty in breathing.