If oysters are put directly into the refrigerator in hot summer without cooking and any disinfection, they may only be kept for about a day. Because oysters contain a large number of bacteria and other microorganisms, the growth rate of these bacteria will slow down in the refrigerator, so oysters will be stored in the refrigerator for a longer time.
Generally speaking, oysters can be kept in the refrigerator for about 3 to 4 days. However, if the oysters are cooked, covered with plastic wrap and put in the refrigerator, the storage time can be extended to about 5 days.
It should be noted that even in the refrigerator, oysters may go bad. So check the freshness carefully before eating. If you find that oysters have gone bad, you should stop eating them immediately to avoid food poisoning.