How to write a leave letter for viral fever

Following is a letterwritten by Kailash to his class teacher, requesting leave due to sickness. Youcan use the same format by simply replacing the name with yours and adding yourschool details in respective places

From

Kailash,
Class VII,
XXX School,
ZZZ.

To

The Class teacher,
Class VII,
XXX School,
ZZZ.

Respected Sir/Madam,

Since I am suffering with viral fever for the past 2 days I will not be able to come to the class for another 2 days.

Kindly excuse my absence and grant me leave till (Date).

Thanking You,

Yours Truly,
Kailash