There were no choices provided. But there is a related research about this situation.
Risk factors of influenza transmission in households
Source: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1326070/
<span>>Reasons for increased transmission from children
</span> The research pointed three causes.
1. Children are more exposed to different people in different places. their households, peers in schools and other children.
2. Children especially preschools are said to have lower immunity which makes them prone and catching influenza.
3. Lastly, viral shedding among children can alleviate and spread period of infection.
<span>Domestic violence and human immunodeficiency virus (HIV) infection are problems of great public health worldwide, especially sub-Saharan Africa and much of the developing countries. This is due to their far reaching social, economic and public health consequences. The two problems have gender inequality and gender power imbalances as the driving force behind the “epidemics”. HIV infection is mainly acquired through heterosexual relations, which themselves are greatly influenced by socio-cultural factors, underlying which are gender power imbalances. Unfortunately gender relations, and gender issues in general, have not been given much emphasis in the medical perspective, especially in efforts for prevention and control of HIV infection. There is thus a need to mainstream gender relations in reproductive health. This article aims at emphasizing the intersection between domestic violence, gender inequality and HIV infection</span>
He observed dairymaids milking cows with cowpox to see if the statement was true before forming a hypothesis.
A. Direct evidence
Hope that helps you out