Covid-19 activity in Hong Kong is expected to see a “further increase,” local health authorities have warned. High-risk individuals – including pregnant women and healthcare workers – are urged to get vaccinated or receive a booster shot. The risk posed by Covid-19 still exists in Hong Kong, while virus activity in the city and neighbouring regions has continued to increase, the Centre for Health Protection (CHP) warned on Thursday. The virus, which first hit Hong Kong in early 2020, still presents rising waves around every four to six weeks in the city, and there has been an uptick in activit…