Case 226

 An eighty years-old female presented in our hospital with slight fever. Lately, she contacted closely with a person with COVID19. PCR test revealed she was positive. She received chest CT at the day of admission 4 days after the close contact. Thereafter, each time her symptoms worsened, she received CT: 8 days after and 15 days after the close contact (Fig. 1).

What is the immune antibody within few days after the close contact ?

1.　Ig A

2.　Ig M

3.　Ig G

4.　Ig E

5.　Ig D

What is the main immune response for COVID at the day 7?

1.　Ig A

2.　Ig M

3.　Ig G

4.　Ig E

5.　Ig D

What is the main response for COVID at the day 15?

1.　Ig A

2.　Ig M

3.　Ig G

4.　Ig E

5.　Ig D

answer

2021.3.31