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R number

Definition

R number

The basic reproduction number, also known as the R or R0, is the average number of people one person with an infectious disease will likely infect in the future.

Seven new coronaviruses have been found lurking in bats in Africa

Health

Seven new coronaviruses have been found lurking in bats in Africa

News

tractor in field

Health

Covid-19 pandemic risks worst global food crisis in decades

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Planes and offices must improve ventilation to reduce coronavirus risk

Health

Planes and offices must improve ventilation to reduce coronavirus risk

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Last Word

How long can viruses survive outside the body?

Regulars

What the latest research suggests about the coronavirus in pregnancy

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What the latest research suggests about the coronavirus in pregnancy

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Cheap and easy $1 coronavirus test to undergo trials in Senegal

Health

Cheap and easy $1 coronavirus test to undergo trials in Senegal

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How accurate are the results from self-testing for covid-19 at home?

Health

How accurate are the results from self-testing for covid-19 at home?

Analysis

Coronavirus: Developing countries are ‘on a ledge with no safety net’

Health

Coronavirus: Developing countries are ‘on a ledge with no safety net’

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Independent scientists criticise UK government's covid-19 approach

Health

Independent scientists criticise UK government's covid-19 approach

The UK government's "stay alert" messaging, use of statistics and outsourcing of coronavirus contact tracing have been criticised by an independent science committee

News

Technology

Bluetooth may not work well enough to trace coronavirus contacts

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Technology

US start-up is testing drones in India to enforce social distancing

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Health

How some African countries are beginning to ease coronavirus lockdowns

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Health

New Zealand is close to wiping out covid-19 - can it return to normal?

News