A comparison of the genes of M. tuberculosis complex (MTBC) in humans to MTBC in animals suggests humans did not acquire MTBC from animals during animal domestication, as researchers previously believed. Both strains of the tuberculosis bacteria share a common ancestor, which could have infected humans even before the Neolithic Revolution. Skeletal remains show some prehistoric humans (4000 BC) had TB, and researchers have found tubercular decay in the spines of Egyptian mummies dating from 3000 to 2400 BC. Genetic studies suggest the presence of TB in the Americas from about AD 100.Before the Industrial Revolution, folklore often associated tuberculosis with vampires. When one member of a family died from the disease, the other infected members would lose their health slowly. People believed this was caused by the original person with TB draining the life from the other family members.Although Richard Morton established the pulmonary form associated with tubercles as a pathology in 1689, due to the variety of its symptoms, TB was not identified as a single disease until the 1820s. Benjamin Marten conjectured in 1720 that consumptions were caused by microbes which were spread by people living in close proximity to each other. In 1819 René Laennec claimed that tubercles were the cause of pulmonary tuberculosis. J. L. Schönlein first published the name "tuberculosis" (German:  Tuberkulose) in 1832.
Eravacycline (TP-434, Xerava) is a synthetic halogenated tetracycline class antibiotic by Tetraphase Pharmaceuticals. It is closely related to tigecycline. It has a broad spectrum of activity including many multi-drug resistant strains of bacteria. Phase III studies in complicated intra-abdominal infections (cIAI) and complicated urinary tract infections (cUTI) were recently completed with mixed results. Eravacycline was granted fast track designation by the FDA and is currently available in USA. Medical uses
Eravacycline has shown broad spectrum of activity against a variety of Gram-positive and Gram-negative bacteria, including multi-drug resistant strains, such as methicillin-resistant Staphylococcus aureus (MRSA) and carbapenem-resistant Enterobacteriaceae. It is currently being formulated as for intravenous and oral administration. Spectrum of activity
Gram-positive organisms
Staphylococcus aureus (both methicillin-resistant and sensitive strains)
Streptococcus pneumoniae
Enterococcus faecalis
Enterococcus faecium (including vancomycin resistant strains)

Gram-negative organisms
Acinetobacter baumannii
Stenotrophomonas maltophilia
Haemophilus influenzae
Moraxella catarrhalis
Neisseria gonorrhoeae
Enterobacteriaceae
Escherichia coli (including ESBL-producing strains)
Klebsiella pneumoniae (including carbapenem resistant strains)
Klebsiella oxytoca
Enterobacter species
Citrobacter species
Proteus mirabilis
Serratia marcescensSimilar to other tetracycline derivatives, eravacycline is poorly active against Pseudomonas aeruginosa with a MIC90 = 16 mcg/mL (range 0.06-64 mcg/mL). Eravacycline maintains in-vitro activity against Enterobacteriaceae carrying the mcr-1 gene responsible for polymyxin b/colistin resistance. Clinical trials
Current and past clinical trial information:
https://clinicaltrials.gov/ct2/results?cond=&term=eravacycline&cntry1=&state1=&recrs=

Phase 3 trials
Complicated Intra-abdominal infections (IGNITE 1)
The IGNITE 1 trial compared twice-daily IV eravacycline to once-daily ertapenem for the treatment of cIAI. A total of 541 patients were included and eravacycline demonstrated noninferiority to ertapenem. An additional pivotal phase 3 study (IGNITE 4) is planned for late 2016 with initial results likely available in the fourth quarter of 2017.