Abstract Background Group A streptococcal (GAS) infections can lead to the development of severe post-infectious sequelae. such as rheumatic fever (RF) and rheumatic heart disease (RHD). RF and RHD are a major health concern in developing countries. and in indigenous populations of developed nations. https://www.bekindtopets.com/hot-save-Well-Rite-WR-240-Well-Pressure-Storage-Tank-Steel-81-Gal-great-buy/