South Africa pauses rollout of the AstraZeneca vaccine after research shows it’s less effective against the country’s variant; Donald Trump’s Senate impeachment trial for incitement of an insurrection is set to start tomorrow; House Democrats unveil a child tax credit proposal as part of the stimulus package; Latinas face highest unemployment rate among all women during the pandemic; Blacks, Latinos and Native- Americans, the groups most affected by covid, behind Whites on vaccination rates according to CDC data.