They already do have their entire senior Euros/Worlds team injured or ill (or at least exposed) with COVID or other similar illnesses. Look at this list (with accomplishments from last season):
Dmitri Aliev (back injury earlier in the season/COVID) - withdrew from the fifth stage, withdrew from RusNats - 2020 Euro champion, 2020 RusNat champion
Artur Danielian (ankle injury/surgery) - missed entire season, withdrew from Rostelecom, withdrew from Rus Nats - 2020 Euro silver medals, 2020 RusNAt silver medalist
Alexander Samarin (back) - withdrew from his second stage, withdrew from Rostelecom - 2020 RusNats bronze medalist
Mikhail Kolyada (Liza had COVID) - withdrew from fifth stage
Aliona Kostornaia (injury earlier in the season/COVID) - withdrew from the fifth stage, and withdrew from RusNats - 2020 Euro champion, 2020 RusNats silver medalist, 2020 GPF champion
Anna Shcherbakova (pneumonia) - withdrew from Rostelecom - 2020 Euro silver medalist, 2019-2020 RusNats champion, 2020 GPF silver medalist
Alexandra Trusova (severe injury) - didn't withdraw from anything but skated injured at Rostelecom (injured herself more) and RusNats where she was forced to limit her program as she can't physically do/even train more - 2020 Euro bronze medalist, 2020 RusNats bronze medalist, 2020 GPF bronze medalist
Liza Tuktamysheva (COVID) - withdrew from the fifth stage
Anastasiia Guliakova (Liza had COVID) - withdrew from fifth stage
Sofia Samodurova (fever/cold at test skates) - withdrew from free skate
Evgenia Medvedeva (back inury/COVID with severe lung damage) - withdrew from the first and second stages, withdrew from Rostelecom, and withdrew from RusNats
Liza Nugumanova (broken leg) - withdrew from fifth stage
Ksenia Sinitsyna (leg injury and some sickness) - withdrew from entire season and RusNats - 2020 Youth Olympic silver medalist
Boikova/Kozlovskii (Kozlovskii COVID, Boikova cold) - withdrew from third stage (Kozlovskii), (did compete fourth stage), withdrew from fifth stage (Boikova) - 2020 Euros champion, 2020 RusNats chapion
Tarasova/Morozov (Morozov COVID/Tarasova pneumonia) - withdrew from Skate America (Morozov), withdrew from the fifth stage (Tarasova) - 2019-2020 Euros silver medalist, 2020 RusNats silver medalist
Pavliuchenko/Khodykin (Khodykin accute respiratory injection) - withdrew from Rostelecom - 2020 Euros bronze medalist, 2020 RusNats bronze medalist
Mishina/Galliamov - (Galliamov COVID) - withdrew from second stage - 2020 GPF bronze medalist
Pepeleva/Pleshkov (one of their coaches got COVID) - withdrew from Rostelecom
Panfilova/Rylov - (Rylov tonsillectomy) - withdrew from test skates and early stages - 2020 World Junior champions, 2020 RusNats Jr. champions, 2020 Winter Youth Olympics champions, 2020 JGPF champions
Akhanteva/Kolsesov - (Kolesov inury) - withdrew from RusNats - 2020 World Junior silver medalists, 2020 RusNats Jr. silver medalists, 2020 RusNats JGPF bronze medalists
Sinitsina/Katsalapov (Katsalapov injury earlier in the season/Sinitsina tendon inflammation at second stage/both COVID - hers severe aand damaged her lungs) - withdrew midway through FD at second stage, withdrew from fifth stage, and withdrew from RusNats - 2020 Euro champion, 2019-2020 RusNats champions
Stepanova/Bukin (Stepanova back injury/COVID) - missed entire fall season, withdrew from Rostelecom - 2020 Euro bronze medalists, 2020 RusNats silver medalists
Zahorski/Guerrerio (Zahorski COVID) - 2020 RusNats bronze medalists
Shevchenko/Eremenko (COVID outbreak at training center) - withdrew from Rostelecom
This list is absolutely crazy and this is what we know. (Also I tried to limit it to prominent skaters.) This can't be normal.