[ZeroHedge] Earlier Thursday morning, we shared a report about a strange phenomenon unfolding at hospitals and emergency rooms across the US. Even as COVID cases continue to fall, emergency rooms across the country have become absolutely packed with patients seeking treatment for abdominal pain, blood clots, heart conditions and respiratory problems. All of these symptoms line up with the wide range of official COVID symptoms reported by the CDC. But, as the news reports state, the cause of this sudden wave, which has led to some patients being treated again in hospital hallways, remains officially unclear.More than 18 months after it first emerged from Wuhan, SARS-CoV-2, the virus that causes COVID, remains an enigma to scientists, who have been conducting a wide range of studies to try and learn more about how the virus does what it does. One of COVID's most notable features is its ability to cause damage not just to patient's respiratory system, but to the heart and vascular system as well. Oftentimes, this damage leaves patients with long-lasting symptoms that persist well beyond the initial infection.