Before revision:  The local mode simulates virus transmission through contacts in the vicinity of the place of residence while the global mode simulates virus transmission through social mixing in public places  , sport arenas, airports, etc  , where many people meet, who live in remote geographic locations.
After revision:  The local mode simulates virus transmission through contacts in the vicinity of the place of residence while the global mode simulates virus transmission through social mixing in public places : schools, hospitals , sport arenas, airports, etc , where many people meet, who live in remote geographic locations.