Although the new viruses will now be available for vaccine research, WHO said clinical trials using the clade 1 viruses should continue as an essential step in pandemic preparedness, because the trials yield useful information on priming, cross-reactivity, and cross-protection by vaccine viruses from different clades and subclades. "</ref>As of November 2006, the United States Department of Health and Human Services (HHS) had enough H5N1 pre-pandemic vaccine to treat about 3 million people (5.9 million full-potency doses) in spite of 0.2 million doses used for research and 1.4 million doses that have begun to lose potency (from the original 7.5 million full-potency doses purchased from Sanofi Pasteur and Chiron Corp.). The expected shelf life of seasonal flu vaccine is about a year so the fact that most of the H5N1 pre-pandemic stockpile is still good after about two years is considered encouraging. Clinical trials
H5N1 clinical trials are clinical trials concerning H5N1 vaccines. They are intended to discover pharmacological effects and identify any adverse reactions the vaccines may achieve in humans. References
Further reading
Khurana S, Suguitan AL, Rivera Y, Simmons CP, Lanzavecchia A, Sallusto F, Manischewitz J, King LR, Subbarao K, Golding H (April 2009). "Antigenic fingerprinting of H5N1 avian influenza using convalescent sera and monoclonal antibodies reveals potential vaccine and diagnostic targets". PLOS Med. 6 (4): e1000049. doi:10.1371/journal.pmed.1000049. PMC 2661249. PMID 19381279. External links
"Diagnostic Targets and Potential Vaccine Against H5n1 Avian Influenza". U.S. Food and Drug Administration (FDA). 2019-10-21. US patent 8778847, "Immunogenic peptides of influenza virus", published 2010-11-11, issued 2014-06-25 
"Pandemic Influenza". HHS.gov. 2016-07-14.
The outcome of the prognosis is dependent on early diagnosis and complete resection. The standard duration between diagnosis and reappearance was "23 months, 50 months, and 66 months for local recurrence, nodal metastasis, and distant metastasis, [respectively]" (Watarai, Amoh, Aki, Takasu, Katsuoka, 2011). In terms of prognosis regarding recorded patients, "27% of patients died from their disease. "(Tural, Selçukbiricik, Günver, Karışmaz, and Serdengecti, 2013) As early as "nine weeks"( Malik, Saxena, and Kamath, 2013) succeeding clinical surgeries, had reports of patients deaths been recorded. It has also been recorded that "one patient survived twelve years after their diagnosis. "(Ka, Gnangnon, and Diouf, 2016) The tumour has a "60% rate of metastasis and mortality in the order of 25%" (Ka, Gnangnon, and Diouf, 2016) with the highest recordings of metastases being found in "lymph nodes and lung and less commonly, bone and brain." (Ka, Gnangnon, and Diouf, 2016)

Recorded Cases
Facial localisation of a malignant chondroid syringoma
Written by Tural Selçukbiricik, Günver, Karışmaz, and Serdengecti, this report investigates the case of a slow growing bump on the face of a thirty-four-year-old woman. After undergoing an excisional biopsy, it was revealed that the nodule had developed into neurofibroma. Originally the patient had undergone excision however she sustained recurrence in under a year of the surgery. She continued to undergo excision and this led to the diagnosis of malignant chondroid syringoma. To remove the tumour, the patient first had a pathological and histopathological examination to examine the metastisation and growth pattern.