Coronavirus COVID-19

COVID-19 Patient zero could be an unsolved mystery

Three months after the first known cases of COVID-19 emerged, there is still no clear answer who “patient zero” is, or where it came from.

Also known as the index case, patient zero refers to the first human infected in an outbreak.

On Wednesday, COVID-19 has spread to more than 196 countries, killing more than 16,000 people worldwide.

Tracking down patient zero could be key to understand the Coronavirus behind the ongoing world health crisis and how to control further transmission. But in many hard-hit countries, no one knows how the virus got there.

The search for patient zero in each affected country has proven an enormous task. This is largely due to the long incubation period and asymptomatic transmission of COVID-19. Infected individuals who are not showing symptoms can cruise through screenings at ports of entry undetected and infect others unknowingly, making the route of transmission hard to trace in most cases.

Source: CGTN

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