Hours after Israel embargoes travel to several southern African nations, B.1.1.529 detected in man returning from Malawi which is not included in travel blacklist; 2 other travelers also suspected of carrying new bug; all three are vaccinated

Bennett says B.1.1.529 more contagious than Delta variant and seeks aggressive response to stave off its spread; Health Ministry's Dr. Alroy-Preis suggests shutting down Ben Gurion Airport for at least a week after four cases of new strain confirmed