Some of the world's COVID-19 hot spots, such as Poland, set new records for daily case numbers, with more proposing or imposing restrictions to slow the spread of the virus, which in many spots is fueled by more transmissible SARS-CoV-2 variants.Meanwhile, Brazil passed the somber mark of 300,000 deaths as its surge rages and some doctors worry about having enough drugs to intubate the sickest patients.Brazilian hospitals fear ventilation drug shortagesYesterday, Brazil's health ministry reported more than 2,000 deaths, lifting it above 300,000, only the second country behind the United States to pass that mark, according to the Associated Press.