What happened to the Native American population in 1492?
European colonizers killed so many indigenous Americans that the planet cooled down, a group of researchers concluded. Following Christopher Columbus’ arrival in North America in 1492, violence and disease killed 90% of the indigenous population — nearly 55 million people — according to a study published this year.
Is O Negative rare or common?
Only 7% of the population are O negative. However, the need for O negative blood is the highest because it is used most often during emergencies. The need for O+ is high because it is the most frequently occurring blood type (37% of the population). The universal red cell donor has Type O negative blood.
What percentage of the population has O negative CMV negative blood?
Only 9 percent of Americans have O negative blood, according to OBI, so Wood’s rare blood type is even more rare with his lack of CMV antibodies. Wood said he regularly gave blood before he knew about the antibodies.
Is CMV a STD?
CMV can be sexually transmitted. It can also be transmitted via breast milk, transplanted organs and, rarely, blood transfusions. Although the virus is not highly contagious, it has been shown to spread in households and among young children in day care centers.
Is it good to be CMV negative?
CMV is generally harmless to adults, but can be fatal to babies. For this reason, babies needing transfusions as part of their medical care should only receive blood from donors who have not been exposed to CMV (CMV negative). Regular testing is conducted on blood donations to check for CMV antibodies.
How do you know if CMV is active?
If there is a 4-fold increase in IgG between the first and second sample, then you have an active CMV infection (primary or reactivated). A positive CMV IgM and negative IgG means you may have very recently been infected.
Is CMV related to HPV?
Human papillomavirus (HPV) and cytomegalovirus (CMV) are DNA viruses that cause serious health conditions in patients of all ages. HPV is one of the most common sexually transmitted viruses causing genital infections and cancers. CMV is an opportunistic pathogen affecting immunocompromised patients.
How rare is CMV?
In the United States, nearly one in three children are already infected with CMV by age five. Over half of adults have been infected with CMV by age 40. Once CMV is in a person’s body, it stays there for life and can reactivate.