COVID-19 Silent Spreaders: The Hidden Challenge
Chapter 1

The outbreak and global spread of SARS-CoV-2

Chapter 2

Deciphering the virus: Science under the microscope

Chapter 3

The race for a shield: Vaccine breakthrough

Chapter 4

A world transformed: Adaptation and future prep

YOUR GOAL

Master of The story of the COVID-19 pandemic

Ch 2 · Deciphering the virus: Science under the microscope
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The hidden challenge of silent spreaders

doctorx Unknowing carriers transmitted SARS-CoV-2 without symptoms, making traditional temperature checks and health screenings insufficient to stop the virus.

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The structural secrets of the spike protein

doctorx Glowing spike-protein spheres float near plexiglass barriers in a clinical blue metropolis.

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Fun Fact

Super-spreading events: Research shows that in early 2020, about 10% to 20% of infected individuals were responsible for 80% of all SARS-CoV-2 transmissions.

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Glossary
genome (noun)
The complete set of genetic material present in a cell or organism. Chinese researchers shared the first complete SARS-CoV-2 genome online on January 11, 2020, to accelerate global research.

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Gossip

Which type of COVID-19 test did you find most unpleasant to take?

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Quiz

Which human cell receptor does the SARS-CoV-2 spike protein bind to in order to enter human cells?

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Quiz

How does the SARS-CoV-2 virus primarily spread from person to person?

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Quiz

What main viral component do rapid antigen tests detect to determine if a person has COVID-19?

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Quiz

In what month of 2020 was the complete genetic sequence of SARS-CoV-2 first published online for global scientists?

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Quiz

Which specific structural part of the SARS-CoV-2 virus did scientists target to design almost all major COVID-19 vaccines?

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Quiz

What does 'PCR' stand for in the context of the highly accurate COVID-19 diagnostic tests?

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Quiz

What public online database received the first uploaded genome of the SARS-CoV-2 virus on January 11, 2020?

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Quiz

What percentage of SARS-CoV-2 infections were estimated by early studies to be completely asymptomatic?

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