What is the ratio of patients who get infectious in hospitals
1 in 25
1 in 50
2 in 77
1 in 100

Which of the following processes within viral replication is the greatest source of genetic variation in rna virus populations? a) high mutation rate due to lack of proofreading of rna genome replication errors.b) transcription from the host cell rna polymerase introduces numerous mutations.c) capsid proteins from the host cell can replace the viral capsid.d) viral rna is translated by host cell ribosomes.

Rotation of the head is made in atlanto-occipital joint or not?

Which of the following is the best description of health protecion the answer is b the direct actions taken by health organizations to improve public health