La evidencia recomienda que la dosis de refuerzo sea de una marca diferente al esquema inicial de la vacunación aunque algunas personas dudan de combinar las vacunas Aún no se sabe cuántas veces será necesario vacunar a las personas para mantener la inmunidad frente al covid-19. Por ahora es necesarioVER MÁS

Gas R134a is an inert gas used as a “high-temperature” refrigerant for domestic refrigeration and automobile air conditioners. It is used for replacing the more environmentally harmful R-12 and convert units that were originally R-12-equipped. Other uses include plastic foam blowing, as a cleaning solvent, a propellant for the deliveryVER MÁS

Gas R134a is an inert gas used as a “high-temperature” refrigerant for domestic refrigeration and automobile air conditioners. It is used for replacing the more environmentally harmful R-12 and convert units that were originally R-12-equipped. Other uses include plastic foam blowing, as a cleaning solvent, a propellant for the deliveryVER MÁS