The Covid-19 pandemic fueled mega rounds as investors look to scale adoption of new technology. : Venture-backed digital health companies raised  an all-time high of $6.7 billion in new capital in the first quarter of 2021 as the Covid-19 pandemic fueled the adoption of new technology, according to venture firm Rock Health. Ro led the pack with its $500 million Series D round last month, valuing the 3.5-year-old virtual primary care and digital pharmacy startup at $5 billion.