ZURICH (Reuters) - Switzerland on Wednesday ordered dance clubs closed and added new mask requirements while leaving the nation largely open for business as it tries to contain surging COVID-19 cases without resorting to a stricter, economy-crippling lockdown.The government in Bern ordered in-person college classes halted from Monday, placed new limits on sporting and leisure activities, and ordered masks worn in packed offices, secondary schools and even outdoors if people cannot keep their distance. Switzerland, which in June appeared to have COVID-19 contained as daily cases dwindled to just a handful, saw new infections soar to 8,616 on Wednesday - roughly 0.1% of the population in a single day. Even so, the government stopped short of shutting retail business, restaurants and other key segments of the economy in hopes that more-limited measures will be enough. “We have to work with a scalpel and make very precise cuts,” Health Minister Alain Berset told reporters in Bern. “If it’s not possible to get the virus under control, then other measures are possible. But we’re trying to take a middle path.”