Hello
Your father is having fever ( high grade i.e. 102-103 F ) and he took injection "ceftrizone 1 gm" (
monocef).This is effective against gram+ve -ve , anaerobes, beta lactamase.
I want to tell you that this is most potent antibiotics and in spite of this fever is not subsiding , this is a cause of concern .
While
levofloxacin is also a most potent drug against many pathogens including URI .
Calpol , B COMPLES AND ZINTEC are supportive treatment .
Now fever is from 10 days so may be due to these possibilities , these include.
1
Tuberculosis , diagnosis can be confirmed by X ray chest , blood for C B C , E S R ( if very high > 80 -90 suggestive of chronic infection including tuberculosis ).
2
Typhoid fever , get in blood for
WIDAL test as well as serology test for diagnostic confirmation.
3
Jaundice (
hepatitis - A , B , C E ) is another one such reason for lond duration fever , so get ion blood for HBASG .
There are so many other reasons of such fever as drug fever , carcinoma but deal as mentioned above .
Consult a physician and get his opinion as this is a cause of concern( 2nd opinion).
Good luck.