On April 23, 2007, it was announced MedImmune and AstraZeneca entered into a definitive agreement under which AstraZeneca intended to acquire MedImmune in an all-cash transaction at US$ 58 per share, or about US$ billion.  On 19 June 2007 AstraZeneca completed the acquisition paying US$ billion primarily for its drug development pipeline. Analysts have criticised the take-over, claiming that AstraZeneca paid too much.  AstraZeneca chose to merge MedImmune with Cambridge Antibody Technology , which it had acquired in 2006, creating a new biologics division under the MedImmune name. AstraZeneca presented the new MedImmune to investors on 7 December 2007. 
Systemic corticosteroids can reactivate tuberculosis and should not be used in patients with a history of active tuberculosis, except when chemoprophylaxis is instituted concomitantly. The incidence or course of acute bacterial infection are probably minimally affected by inhaled triamcinolone. Application of topical corticosteroids to areas of infection, including tuberculosis of the skin, should be initiated or continued only if the appropriate antiinfective treatment is instituted. If the infection does not respond to the antimicrobial therapy, the concurrent use of the topical corticosteroid should be discontinued until the infection is controlled.
Prolonged use of inhaled corticosteroids may be associated with a reduction in bone density. This effect appears to be dose-related and has been reported primarily with high dosages (>= 800 mcg/day of beclomethasone or equivalent for >= 1 year). Reduced levels of total body calcium have also been demonstrated in patients receiving lower dosages. Long-term therapy with inhaled and nasal corticosteroids should be administered cautiously in patients with osteoporosis. It is important that the recommended dosages of the individual products not be exceeded and that the lowest effective dosage be used.