To answer the common question of
“who carried HIV, HPV, Black Death, Lice, syphilis, Ebola etc on the Ark”, it has been expressed a number of times on these forums that these are the result of sin and the degradation of the original Creation as stated in Genesis. These current pathogens are ancestral to the same organisms that had more complex and richer genomes in the original Creation and were not created to be pathogenic. The article below shows that the more the genome is reduced the more “specialized” the pathogen becomes. This is because it has lost its ability to live freely in an open environment and relies on the “host”.
From The Proceedings of the National Academy of Sciences of the United States of America
"The louse-borne human pathogen Bartonella quintana is a genomic derivative of the zoonotic agent Bartonella henselae
ABSTRACT
We present the complete genomes of two human pathogens, Bartonella quintana (1,581,384 bp) and Bartonella henselae (1,931,047 bp). The two pathogens maintain several similarities in being transmitted by insect vectors, using mammalian reservoirs, infecting similar cell types (endothelial cells and erythrocytes) and causing vasculoproliferative changes in immunocompromised hosts. A primary difference between the two pathogens is their reservoir ecology.
Whereas B. quintana is a specialist, using only the human as a reservoir, B. henselae is more promiscuous and is frequently isolated from both cats and humans.
Genome comparison elucidated a high degree of overall similarity with major differences being B. henselae specific genomic islands coding for filamentous hemagglutinin, and
evidence of extensive genome reduction in B. quintana, reminiscent of that found in Rickettsia prowazekii. **Both genomes are reduced versions of chromosome I **from the highly related pathogen Brucella melitensis. Flanked by two rRNA operons is a segment with similarity to genes located on chromosome II of B. melitensis, suggesting that it was acquired by integration of megareplicon DNA in a common ancestor of the two Bartonella species.
Comparisons of the vector-host ecology of these organisms suggest that the utilization of host-restricted vectors is associated with **accelerated rates of genome degradation **and may explain why human pathogens transmitted by specialist vectors are outnumbered by zoonotic agents, which use vectors of broad host ranges."
Read the full article
here
This fully supports the Genesis account.