Added The<unk>  is a<unk>  system which groups viruses into families depending on their type of genome (DNA, RNA, single-stranded (ss), double-stranded (ds) etc.) and their method of replication.
It was created by the American biologist David<unk>  and is the preferred way of classifying viruses today. Other<unk> s are determined by the type of disease the virus causes (localised, disseminated, persistent, etc.) or its morphology (spherical, dodecahedral, etc.). Neither are particularly satisfactory because very different viruses will sometimes cause the same disease (e.g. hepatitis), and viruses with similar structures will often behave very differently (what's more, the precise structure of viruses is often difficult to determine under the microscope).
Baltimore classification
AMUSE score
Alvarado score
SAGES system classification scheme
Runyon classification
Mallampati score
Malinas score
Tygerberg score