=?Cp1252?Q? London, Nov 23 (AP) AstraZenec=?Cp1252?Q?a says late-stage trials of its CO=?Cp1252?Q?VID-19 vaccine were “highly effect=?Cp1252?Q?ive'' in preventing disease. (AP) ?

=?Cp1252?Q?   	London, Nov 23 (AP) AstraZenec=?Cp1252?Q?a says late-stage trials of its CO=?Cp1252?Q?VID-19 vaccine were “highly effect=?Cp1252?Q?ive'' in preventing disease. (AP) ?