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What are the key points for understanding the dynamics of the COVID epidemic?

Text updated on 2020-09-27

We do not yet know everything about this recent COVID-19 epidemic but little by little, the data is accumulating. A few key findings provide insight into the dynamics of the epidemic, i.e., the number of cases, hospitalizations, and deaths related to COVID-19 depending on the weather, different countries and regions.

What we know

What has not yet been fully established

What we don't know yet

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Click on the questions to see the corresponding sources.

Further reading

What factors increase the risk of dying from COVID-19 ?

Who are the vulnerable people?

Can a person without symptoms infect others?

Can my child transmit COVID-19 ?

How long is a person contagious?

How does she get COVID-19 ?

Is the SARS-CoV-2 coronavirus transmitted by aerosols?

Why are superspreader events crucial to understanding the COVID-19 epidemic?

Why put on a mask?

Is the SARS-CoV-2 coronavirus resistant to sunlight?

Is the SARS-CoV-2 coronavirus resistant to cold or heat?

Does the severity of the COVID disease depend on the dose of virus received?

What is cross-protective immunity and can it protect me from COVID-19?