Baltimore's Classification

One of them was Nobel laureate in Physiology or Medicine, David Baltimore.

He founded the "Baltimore's Classification", which classifies viruses into different families based on their type of genome and method of replication.

There are 7 families in this system:

1 - Double stranded DNA viruses

2 - Single stranded DNA viruses

3 - Double stranded RNA viruses

4 - Positive sense single stranded RNA viruses

5 - Negative sense single stranded RNA viruses

6 - Single stranded reverse transcribing RNA viruses

7 - Double stranded reverse transcribing DNA viruses

This system of classification is widely used today.