Refer to the study below and answer the following questions

Managerial accounting case study, The case is about the 787 Dreamliner, an airplane developed by the US based airplane manufacturer, Boeing Airplane Company (Boeing). The case examines the reasons that prompted Boeing to initiate the 787 project. It highlights the making of the aircraft, which was expected to change the dynamics of the world aviation industry. The case also highlights the distinguishing features of the aircraft and explains how it is more advanced than the existing aircraft. Various supply chain related issues are discussed in the case. The case also talks about the post-launch problems faced by the 787 Dreamliner and its repercussions. While some analysts were of the view that those problems were part of initial hiccups, some industry experts opined that Boeing's aggressive outsourcing was responsible for them.

11 Does aciclovir prevent the chances of developing herpes zoster (shingles) when given during primary infection?

12 How long does it take after vaccination to become immunized against chickenpox and therefore safe to work in infectious areas?

13 Is meticillin-resistant Staphylococcus aureus (MRSA) the only major hospital-acquired infection?

14 Do you have to have antibiotics to get Clostridium difficile infection?

15 Why do some patients with rheumatic fever later progress to chronic rheumatic heart disease?

16 What is the World Health Organization recommendation for the prophylaxis of rheumatic fever after a streptococcal throat infection?

17 Does rheumatic fever have an infectious or an immunological aetiology?

18 Why is migratory polyarthritis found in rheumatic heart disease?

19 Are penicillins still the drug of choice in streptococcal infections (particularly Strep. Pneumoniae)?

20 1. How long can the antistreptolysin-O (ASO) titre remain positive after a streptococcal infection? 2. What is the effect of a suitable antibiotic on the ASO titre, if any?