With reports of 60% of sailors who are infected being asymptomatic and mass testing in CA revealing 50X-80X more cases than reported...we don't know the true sale of what we're dealing with.
Such reports need to be written as "With reports of 60% of sailors who are infected are asymptomatic SO FAR". Any declaration of really being asymptomatic should wait until they no longer have virus, or are shedding virus for long periods, say one month or more without illness.