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## NetLogo User Community Models

## WHAT IS IT?

This is a Susceptible-Infected-Vaccinated-Dead (SIVD) model implemented in NetLogo.

## HOW IT WORKS

This model shows the interaction of susceptible, infected, vaccinated, and dead people as the pandemic goes on.

Here are the four classes of people:
1. Susceptible (S): The individuals of that can be infected by COVID-19. They may be infected or immune to the disease if they get the vaccine.
2. Infected (I): The individuals that are infected by COVID-19. They may be cured and become susceptible again or die from the disease.
3. Vaccinated (V): The individuals who got the vaccine for COVID-19 and become immune to the disease.
4. Dead (D): The individuals who died due to the disease.

## HOW TO USE IT

We can set the initial parameters of the simulation:
1. Initial Population: How many people in the population initially. This value ranges from 50 to 300 and can be increased in increments od 1.
2. Initially Infected: How many people get infected at the start of the simulation. This value ranges from 1 to 40 and can be increased in increments of 1.

From there, we can modify the parameters of COVID-19:
1. Infectivity: This value ranges from 0% to 99.9% and can be increased in increments of 0.1%.
2. Infection Radius: Susceptible people within the infection radius may get infected. Its value ranges from 1 to 5 spaces and can be increased in increments of 0.5 spaces.
3. Lethality: Its value ranges from 0% to 99.9% and can be increased in increments of 0.1%.
4. Death Onset: After this period, the infected person has a chance to die every single day, depending on the disease’s lethality. Its value ranges from 1 week to 40 weeks and can be increased in increments of 1 week.
5. Recovery Chance: This value ranges from 0% to 99.9% and can be increased in increments of 0.1%.
6. Start of Recovery: After this period, the infected person has a chance to recover every single day, depending on the disease’s recovery chance. Its value ranges from 1 week to 40 weeks and can be increased in increments of 1 day.
7. Vaccination Chance: Its value ranges from 0% to 99.9% and can be increased in increments of 0.1%.
8. Start of Vaccination: Sets the start of the vaccination period, where susceptible people get vaccinated and therefore become immune to the disease. Its value ranges from 1 to 200 weeks and can be increased in increments of 1 week.