| | Tunisian President Kais Saied said on Monday that his country has received 6 million doses of the coronavirus vaccine as donations from friendly countries, as Tunisia struggles to stop the rapid spread of COVID-19. | | | Nigeria has received 4 million doses of Moderna's (MRNA.O) COVID-19 vaccines donated by the United States government, its health minister said on Monday, as the West African country battles a third wave of infections. | | | The following is a roundup of some of the latest scientific studies on the novel coronavirus and efforts to find treatments and vaccines for COVID-19. | | | The risk of developing neurodegenerative disease in former professional soccer players varies by position and career length but not by playing era, according to a landmark study. | | | Nearly three out of four Americans above the age of 18 have received at least one dose of a COVID-19 vaccine as of Monday, according to the U.S. Centers for Disease Control and Prevention (CDC). | | | The Dominican Republic will slaughter tens of thousands of pigs after detecting outbreaks of African swine fever in 11 of the country's 32 provinces, authorities said on Monday. | | | Germany will in September start to offer a booster shot against COVID-19 to vulnerable individuals such as pensioners and people with weak immune systems, the health ministers of the country's 16 states said in a statement on Monday. | | | The Philippines will extend a night curfew in Manila amid a tightening of restrictions to combat a potential surge in cases of the Delta variant of the coronavirus, a government official said on Monday. | | | Senegal's government warned employers on Monday not to refuse entry to workers who are not vaccinated against COVID-19, calling such measures discriminatory. | | | New York's governor on Monday urged businesses to turn away unvaccinated customers while Florida grappled with an influx of hospitalized COVID-19 patients, both sparked by the surging Delta variant that could lead to new restrictions on daily life. | | | | |