Japan's top COVID-19 adviser Shigeru Omi said Thursday that the peak of the fifth coronavirus wave has largely passed, but warned that a close eye must still be kept on the country's overburdened medical system.Speaking to the House of Councillors' health committee, Omi attributed the downtrend in infections to a "combination of factors," namely the progress of vaccinations, reduced foot traffic, suspension of alcohol in dining establishments and high rate of mask-wearing.But he cautioned that hastily easing anti-pandemic restrictions on people's lives could lead to a "sixth wave" of infect…READ FULL ARTICLE