Viral meningitis: Meningitis caused by many viruses is usually contagious. However, certain viruses that are transmitted by mosquitoes are usually not spread person to person, so they are not contagious.
3] Heat transfers through the glass by conduction 4] Heat transfers from the glass to the outside air via convection. If the temperature differences are small and there are no winds or drafts, transfer of heat to/from air/glass will be by conduction.
This causes high stress within the thickness of the glass which if it exceeds the tensile strength at any point will cause it to shatter. Temperature difference is, itself, caused by the transfer of heat. Therefore it is impossible to have a temperature difference without heat (transfer).