Work out basic reproduction number instantly with clear inputs, formula shown and shareable results.
Multiplies transmission probability per contact, contact rate and infectious duration, the classic decomposition of the basic reproduction number.
R0 decomposition
R0 = transmission probability per contact x contacts per unit time x duration of infectiousness; herd immunity threshold = 1 - 1/R0
No. It depends on contact patterns and behaviour, so the same pathogen has different R0 values in different populations.
Each infection produces less than one further infection on average, so transmission chains die out.