With the exception of flights to New Zealand since the start of the year, we see in a huge surge in covid cases around the world, new strains emerging and a shift from herd immunity as the threshold for opening to fully vaccination to be the threshold for opening the border.
除年初以來飛往紐西蘭的班機外,我們看到在全球範圍內科維德病例大增,新菌株不斷出現,從以群體免疫為開放門檻到以全面接種為開放邊界的轉變。