Population that infects susceptible population. Includes normally symptomatic and severely symptomatic population
Population which is exposed to COVID-19 but did not develop symptoms yet
Population recovered from the COVID-19 and immune to it
Population immune to COVID-19 by vaccination program
Deceased population because of COVID-19
Population which is not immune to COVID-19 and become exposed when met with infected population
Time period for which infected individual spreads the disease
Time between exposure to a disease and when symptoms appear
Number of contacts by an infectious individual with others per day. If Contact Rate is 0.2, it implies that 2.8 individuals are infected in 14 days by an infected individual i.e. Contact Rate = Reproduction Rate /Average Infectious Period
Effectiveness of the vaccine
Fraction of infected population having severe symptoms
Fraction of infected population dying because of COVID-19 on daily basis
Fraction of susceptible population being vaccinated per day. If Vaccination Rate is 0.01, then 1% of susceptible population is being vaccinated every day